diff --git a/docs/data/material/components/text-fields/InputAdornments.js b/docs/data/material/components/text-fields/InputAdornments.js
index e773612be5d91e..4e15a4da27cc39 100644
--- a/docs/data/material/components/text-fields/InputAdornments.js
+++ b/docs/data/material/components/text-fields/InputAdornments.js
@@ -9,8 +9,10 @@ import InputAdornment from '@mui/material/InputAdornment';
 import FormHelperText from '@mui/material/FormHelperText';
 import FormControl from '@mui/material/FormControl';
 import TextField from '@mui/material/TextField';
+import MenuItem from '@mui/material/MenuItem';
 import Visibility from '@mui/icons-material/Visibility';
 import VisibilityOff from '@mui/icons-material/VisibilityOff';
+import InfoOutlined from '@mui/icons-material/InfoOutlined';
 
 export default function InputAdornments() {
   const outlinedStartId = React.useId();
@@ -37,6 +39,19 @@ export default function InputAdornments() {
     event.preventDefault();
   };
 
+  // An endAdornment coexists with the Select's chevron without overlapping it.
+  const infoEndAdornment = (
+    <InputAdornment position="end">
+      <InfoOutlined />
+    </InputAdornment>
+  );
+
+  const infoStartAdornment = (
+    <InputAdornment position="start">
+      <InfoOutlined />
+    </InputAdornment>
+  );
+
   return (
     <Box sx={{ display: 'flex', flexWrap: 'wrap' }}>
       <div>
@@ -86,14 +101,40 @@ export default function InputAdornments() {
             label="Password"
           />
         </FormControl>
-        <FormControl fullWidth sx={{ m: 1 }}>
-          <InputLabel htmlFor={`${outlinedAmountId}-input`}>Amount</InputLabel>
-          <OutlinedInput
-            id={`${outlinedAmountId}-input`}
-            startAdornment={<InputAdornment position="start">$</InputAdornment>}
-            label="Amount"
-          />
-        </FormControl>
+        <div>
+          <FormControl sx={{ m: 1, width: '25ch' }}>
+            <InputLabel htmlFor={`${outlinedAmountId}-input`}>Amount</InputLabel>
+            <OutlinedInput
+              id={`${outlinedAmountId}-input`}
+              startAdornment={<InputAdornment position="start">$</InputAdornment>}
+              label="Amount"
+            />
+          </FormControl>
+          <TextField
+            select
+            label="Select"
+            defaultValue={20}
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{ select: { endAdornment: infoEndAdornment } }}
+          >
+            <MenuItem value={10}>Ten</MenuItem>
+            <MenuItem value={20}>Twenty</MenuItem>
+            <MenuItem value={30}>Thirty</MenuItem>
+          </TextField>
+          <TextField
+            select
+            label="Native"
+            defaultValue={20}
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{
+              select: { native: true, startAdornment: infoStartAdornment },
+            }}
+          >
+            <option value={10}>Ten</option>
+            <option value={20}>Twenty</option>
+            <option value={30}>Thirty</option>
+          </TextField>
+        </div>
       </div>
       <div>
         <TextField
@@ -142,13 +183,41 @@ export default function InputAdornments() {
             }
           />
         </FormControl>
-        <FormControl fullWidth sx={{ m: 1 }} variant="filled">
-          <InputLabel htmlFor={`${filledAmountId}-input`}>Amount</InputLabel>
-          <FilledInput
-            id={`${filledAmountId}-input`}
-            startAdornment={<InputAdornment position="start">$</InputAdornment>}
-          />
-        </FormControl>
+        <div>
+          <FormControl sx={{ m: 1, width: '25ch' }} variant="filled">
+            <InputLabel htmlFor={`${filledAmountId}-input`}>Amount</InputLabel>
+            <FilledInput
+              id={`${filledAmountId}-input`}
+              startAdornment={<InputAdornment position="start">$</InputAdornment>}
+            />
+          </FormControl>
+          <TextField
+            select
+            label="Select"
+            defaultValue={20}
+            variant="filled"
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{ select: { endAdornment: infoEndAdornment } }}
+          >
+            <MenuItem value={10}>Ten</MenuItem>
+            <MenuItem value={20}>Twenty</MenuItem>
+            <MenuItem value={30}>Thirty</MenuItem>
+          </TextField>
+          <TextField
+            select
+            label="Native"
+            defaultValue={20}
+            variant="filled"
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{
+              select: { native: true, startAdornment: infoStartAdornment },
+            }}
+          >
+            <option value={10}>Ten</option>
+            <option value={20}>Twenty</option>
+            <option value={30}>Thirty</option>
+          </TextField>
+        </div>
       </div>
       <div>
         <TextField
@@ -196,13 +265,41 @@ export default function InputAdornments() {
             }
           />
         </FormControl>
-        <FormControl fullWidth sx={{ m: 1 }} variant="standard">
-          <InputLabel htmlFor={`${standardAmountId}-input`}>Amount</InputLabel>
-          <Input
-            id={`${standardAmountId}-input`}
-            startAdornment={<InputAdornment position="start">$</InputAdornment>}
-          />
-        </FormControl>
+        <div>
+          <FormControl sx={{ m: 1, width: '25ch' }} variant="standard">
+            <InputLabel htmlFor={`${standardAmountId}-input`}>Amount</InputLabel>
+            <Input
+              id={`${standardAmountId}-input`}
+              startAdornment={<InputAdornment position="start">$</InputAdornment>}
+            />
+          </FormControl>
+          <TextField
+            select
+            label="Select"
+            defaultValue={20}
+            variant="standard"
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{ select: { endAdornment: infoEndAdornment } }}
+          >
+            <MenuItem value={10}>Ten</MenuItem>
+            <MenuItem value={20}>Twenty</MenuItem>
+            <MenuItem value={30}>Thirty</MenuItem>
+          </TextField>
+          <TextField
+            select
+            label="Native"
+            defaultValue={20}
+            variant="standard"
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{
+              select: { native: true, startAdornment: infoStartAdornment },
+            }}
+          >
+            <option value={10}>Ten</option>
+            <option value={20}>Twenty</option>
+            <option value={30}>Thirty</option>
+          </TextField>
+        </div>
       </div>
     </Box>
   );
diff --git a/docs/data/material/components/text-fields/InputAdornments.tsx b/docs/data/material/components/text-fields/InputAdornments.tsx
index deb539b0708e8b..af61ee8a6266ba 100644
--- a/docs/data/material/components/text-fields/InputAdornments.tsx
+++ b/docs/data/material/components/text-fields/InputAdornments.tsx
@@ -9,8 +9,10 @@ import InputAdornment from '@mui/material/InputAdornment';
 import FormHelperText from '@mui/material/FormHelperText';
 import FormControl from '@mui/material/FormControl';
 import TextField from '@mui/material/TextField';
+import MenuItem from '@mui/material/MenuItem';
 import Visibility from '@mui/icons-material/Visibility';
 import VisibilityOff from '@mui/icons-material/VisibilityOff';
+import InfoOutlined from '@mui/icons-material/InfoOutlined';
 
 export default function InputAdornments() {
   const outlinedStartId = React.useId();
@@ -37,6 +39,18 @@ export default function InputAdornments() {
     event.preventDefault();
   };
 
+  // An endAdornment coexists with the Select's chevron without overlapping it.
+  const infoEndAdornment = (
+    <InputAdornment position="end">
+      <InfoOutlined />
+    </InputAdornment>
+  );
+  const infoStartAdornment = (
+    <InputAdornment position="start">
+      <InfoOutlined />
+    </InputAdornment>
+  );
+
   return (
     <Box sx={{ display: 'flex', flexWrap: 'wrap' }}>
       <div>
@@ -86,14 +100,40 @@ export default function InputAdornments() {
             label="Password"
           />
         </FormControl>
-        <FormControl fullWidth sx={{ m: 1 }}>
-          <InputLabel htmlFor={`${outlinedAmountId}-input`}>Amount</InputLabel>
-          <OutlinedInput
-            id={`${outlinedAmountId}-input`}
-            startAdornment={<InputAdornment position="start">$</InputAdornment>}
-            label="Amount"
-          />
-        </FormControl>
+        <div>
+          <FormControl sx={{ m: 1, width: '25ch' }}>
+            <InputLabel htmlFor={`${outlinedAmountId}-input`}>Amount</InputLabel>
+            <OutlinedInput
+              id={`${outlinedAmountId}-input`}
+              startAdornment={<InputAdornment position="start">$</InputAdornment>}
+              label="Amount"
+            />
+          </FormControl>
+          <TextField
+            select
+            label="Select"
+            defaultValue={20}
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{ select: { endAdornment: infoEndAdornment } }}
+          >
+            <MenuItem value={10}>Ten</MenuItem>
+            <MenuItem value={20}>Twenty</MenuItem>
+            <MenuItem value={30}>Thirty</MenuItem>
+          </TextField>
+          <TextField
+            select
+            label="Native"
+            defaultValue={20}
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{
+              select: { native: true, startAdornment: infoStartAdornment },
+            }}
+          >
+            <option value={10}>Ten</option>
+            <option value={20}>Twenty</option>
+            <option value={30}>Thirty</option>
+          </TextField>
+        </div>
       </div>
       <div>
         <TextField
@@ -142,13 +182,41 @@ export default function InputAdornments() {
             }
           />
         </FormControl>
-        <FormControl fullWidth sx={{ m: 1 }} variant="filled">
-          <InputLabel htmlFor={`${filledAmountId}-input`}>Amount</InputLabel>
-          <FilledInput
-            id={`${filledAmountId}-input`}
-            startAdornment={<InputAdornment position="start">$</InputAdornment>}
-          />
-        </FormControl>
+        <div>
+          <FormControl sx={{ m: 1, width: '25ch' }} variant="filled">
+            <InputLabel htmlFor={`${filledAmountId}-input`}>Amount</InputLabel>
+            <FilledInput
+              id={`${filledAmountId}-input`}
+              startAdornment={<InputAdornment position="start">$</InputAdornment>}
+            />
+          </FormControl>
+          <TextField
+            select
+            label="Select"
+            defaultValue={20}
+            variant="filled"
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{ select: { endAdornment: infoEndAdornment } }}
+          >
+            <MenuItem value={10}>Ten</MenuItem>
+            <MenuItem value={20}>Twenty</MenuItem>
+            <MenuItem value={30}>Thirty</MenuItem>
+          </TextField>
+          <TextField
+            select
+            label="Native"
+            defaultValue={20}
+            variant="filled"
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{
+              select: { native: true, startAdornment: infoStartAdornment },
+            }}
+          >
+            <option value={10}>Ten</option>
+            <option value={20}>Twenty</option>
+            <option value={30}>Thirty</option>
+          </TextField>
+        </div>
       </div>
       <div>
         <TextField
@@ -196,13 +264,41 @@ export default function InputAdornments() {
             }
           />
         </FormControl>
-        <FormControl fullWidth sx={{ m: 1 }} variant="standard">
-          <InputLabel htmlFor={`${standardAmountId}-input`}>Amount</InputLabel>
-          <Input
-            id={`${standardAmountId}-input`}
-            startAdornment={<InputAdornment position="start">$</InputAdornment>}
-          />
-        </FormControl>
+        <div>
+          <FormControl sx={{ m: 1, width: '25ch' }} variant="standard">
+            <InputLabel htmlFor={`${standardAmountId}-input`}>Amount</InputLabel>
+            <Input
+              id={`${standardAmountId}-input`}
+              startAdornment={<InputAdornment position="start">$</InputAdornment>}
+            />
+          </FormControl>
+          <TextField
+            select
+            label="Select"
+            defaultValue={20}
+            variant="standard"
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{ select: { endAdornment: infoEndAdornment } }}
+          >
+            <MenuItem value={10}>Ten</MenuItem>
+            <MenuItem value={20}>Twenty</MenuItem>
+            <MenuItem value={30}>Thirty</MenuItem>
+          </TextField>
+          <TextField
+            select
+            label="Native"
+            defaultValue={20}
+            variant="standard"
+            sx={{ m: 1, width: '25ch' }}
+            slotProps={{
+              select: { native: true, startAdornment: infoStartAdornment },
+            }}
+          >
+            <option value={10}>Ten</option>
+            <option value={20}>Twenty</option>
+            <option value={30}>Thirty</option>
+          </TextField>
+        </div>
       </div>
     </Box>
   );
diff --git a/packages/mui-material/src/FilledInput/FilledInput.js b/packages/mui-material/src/FilledInput/FilledInput.js
index 349252d64c3d5e..4cc7aa92315b79 100644
--- a/packages/mui-material/src/FilledInput/FilledInput.js
+++ b/packages/mui-material/src/FilledInput/FilledInput.js
@@ -11,6 +11,7 @@ import memoTheme from '../utils/memoTheme';
 import createSimplePaletteValueFilter from '../utils/createSimplePaletteValueFilter';
 import { useDefaultProps } from '../DefaultPropsProvider';
 import filledInputClasses, { getFilledInputUtilityClass } from './filledInputClasses';
+import selectClasses from '../Select/selectClasses';
 import {
   rootOverridesResolver as inputBaseRootOverridesResolver,
   inputOverridesResolver as inputBaseInputOverridesResolver,
@@ -163,7 +164,12 @@ const FilledInputRoot = styled(InputBaseRoot, {
         {
           props: ({ ownerState }) => ownerState.endAdornment,
           style: {
-            paddingRight: 12,
+            // use CSS variable to keep specificity
+            '--_trailingPad': '12px',
+            paddingRight: 'var(--_trailingPad)',
+            [`&.${selectClasses.root}`]: {
+              '--_trailingPad': '0px',
+            },
           },
         },
         {
diff --git a/packages/mui-material/src/NativeSelect/NativeSelectInput.js b/packages/mui-material/src/NativeSelect/NativeSelectInput.js
index 68f1a1ac13a229..ca224bdb6f7877 100644
--- a/packages/mui-material/src/NativeSelect/NativeSelectInput.js
+++ b/packages/mui-material/src/NativeSelect/NativeSelectInput.js
@@ -6,8 +6,10 @@ import refType from '@mui/utils/refType';
 import composeClasses from '@mui/utils/composeClasses';
 import capitalize from '../utils/capitalize';
 import nativeSelectClasses, { getNativeSelectUtilityClasses } from './nativeSelectClasses';
+import inputBaseClasses from '../InputBase/inputBaseClasses';
 import { styled } from '../zero-styled';
 import rootShouldForwardProp from '../styles/rootShouldForwardProp';
+import inputAdornmentClasses from '../InputAdornment/inputAdornmentClasses';
 
 const useUtilityClasses = (ownerState) => {
   const { classes, variant, disabled, multiple, open, error } = ownerState;
@@ -46,14 +48,29 @@ export const StyledSelectSelect = styled('select', {
   '&:not([multiple]) option, &:not([multiple]) optgroup': {
     backgroundColor: (theme.vars || theme).palette.background.paper,
   },
+  [`& ~ .${inputAdornmentClasses.root}`]: {
+    position: 'absolute',
+    top: '50%',
+    transform: 'translateY(-50%)',
+    right: 'calc(var(--_caret) + 2px)',
+  },
+  [`.${inputBaseClasses.root}:has(> &)`]: {
+    '--_endAdornment': '0px',
+  },
   variants: [
     {
       props: ({ ownerState }) =>
         ownerState.variant !== 'filled' && ownerState.variant !== 'outlined',
       style: {
+        [`.${inputBaseClasses.root}:has(> &)`]: {
+          '--_caret': '24px',
+        },
+        [`.${inputBaseClasses.root}:has(> & ~ .${inputAdornmentClasses.root})`]: {
+          '--_endAdornment': '28px',
+        },
         // Bump specificity to allow extending custom inputs
         '&&&': {
-          paddingRight: 24,
+          paddingRight: 'calc(var(--_caret) + var(--_endAdornment))',
           minWidth: 16, // So it doesn't collapse.
         },
       },
@@ -63,8 +80,14 @@ export const StyledSelectSelect = styled('select', {
         variant: 'filled',
       },
       style: {
+        [`.${inputBaseClasses.root}:has(> &)`]: {
+          '--_caret': '32px',
+        },
+        [`.${inputBaseClasses.root}:has(> & ~ .${inputAdornmentClasses.root})`]: {
+          '--_endAdornment': '28px',
+        },
         '&&&': {
-          paddingRight: 32,
+          paddingRight: 'calc(var(--_caret) + var(--_endAdornment))',
         },
       },
     },
@@ -73,12 +96,18 @@ export const StyledSelectSelect = styled('select', {
         variant: 'outlined',
       },
       style: {
+        [`.${inputBaseClasses.root}:has(> &)`]: {
+          '--_caret': '32px',
+        },
+        [`.${inputBaseClasses.root}:has(> & ~ .${inputAdornmentClasses.root})`]: {
+          '--_endAdornment': '28px',
+        },
         borderRadius: (theme.vars || theme).shape.borderRadius,
         '&:focus': {
           borderRadius: (theme.vars || theme).shape.borderRadius, // Reset the reset for Chrome style
         },
         '&&&': {
-          paddingRight: 32,
+          paddingRight: 'calc(var(--_caret) + var(--_endAdornment))',
         },
       },
     },
diff --git a/packages/mui-material/src/OutlinedInput/OutlinedInput.js b/packages/mui-material/src/OutlinedInput/OutlinedInput.js
index bb851995a8224d..4430abc6ab06f9 100644
--- a/packages/mui-material/src/OutlinedInput/OutlinedInput.js
+++ b/packages/mui-material/src/OutlinedInput/OutlinedInput.js
@@ -11,6 +11,7 @@ import memoTheme from '../utils/memoTheme';
 import createSimplePaletteValueFilter from '../utils/createSimplePaletteValueFilter';
 import { useDefaultProps } from '../DefaultPropsProvider';
 import outlinedInputClasses, { getOutlinedInputUtilityClass } from './outlinedInputClasses';
+import selectClasses from '../Select/selectClasses';
 import InputBase, {
   rootOverridesResolver as inputBaseRootOverridesResolver,
   inputOverridesResolver as inputBaseInputOverridesResolver,
@@ -93,7 +94,12 @@ const OutlinedInputRoot = styled(InputBaseRoot, {
         {
           props: ({ ownerState }) => ownerState.endAdornment,
           style: {
-            paddingRight: 14,
+            // use CSS variable to keep specificity
+            '--_trailingPad': '14px',
+            paddingRight: 'var(--_trailingPad)',
+            [`&.${selectClasses.root}`]: {
+              '--_trailingPad': '0px',
+            },
           },
         },
         {
diff --git a/test/regressions/fixtures/Select/SelectEndAdornment.js b/test/regressions/fixtures/Select/SelectEndAdornment.js
new file mode 100644
index 00000000000000..97a9674b36198f
--- /dev/null
+++ b/test/regressions/fixtures/Select/SelectEndAdornment.js
@@ -0,0 +1,59 @@
+import * as React from 'react';
+import Box from '@mui/material/Box';
+import MenuItem from '@mui/material/MenuItem';
+import Select from '@mui/material/Select';
+import FormControl from '@mui/material/FormControl';
+import InputLabel from '@mui/material/InputLabel';
+import InputAdornment from '@mui/material/InputAdornment';
+import InfoOutlined from '@mui/icons-material/InfoOutlined';
+
+// https://github.com/mui/material-ui/issues/45270
+// The endAdornment sits left of the chevron (not over it) and the value clears
+// both, across variants and with a start adornment present.
+const variants = ['outlined', 'filled', 'standard'];
+
+const endAdornment = (
+  <InputAdornment position="end">
+    <InfoOutlined />
+  </InputAdornment>
+);
+
+const startAdornment = (
+  <InputAdornment position="start">
+    <InfoOutlined />
+  </InputAdornment>
+);
+
+export default function SelectEndAdornment() {
+  return (
+    <Box sx={{ display: 'flex', flexDirection: 'column', gap: 2, width: 320, p: 2 }}>
+      {variants.map((variant) => (
+        <FormControl key={variant} variant={variant}>
+          <InputLabel id={`select-${variant}-label`}>Label</InputLabel>
+          <Select
+            labelId={`select-${variant}-label`}
+            id={`select-${variant}`}
+            label="Label"
+            value="Twenty"
+            endAdornment={endAdornment}
+          >
+            <MenuItem value="Twenty">Twenty</MenuItem>
+          </Select>
+        </FormControl>
+      ))}
+      <FormControl variant="outlined">
+        <InputLabel id="select-start-end-label">Label</InputLabel>
+        <Select
+          labelId="select-start-end-label"
+          id="select-start-end"
+          label="Label"
+          value="Twenty"
+          startAdornment={startAdornment}
+          endAdornment={endAdornment}
+        >
+          <MenuItem value="Twenty">Twenty</MenuItem>
+        </Select>
+      </FormControl>
+    </Box>
+  );
+}