diff --git a/.changeset/tame-ducks-ring.md b/.changeset/tame-ducks-ring.md
new file mode 100644
index 00000000000..2fde4d6b218
--- /dev/null
+++ b/.changeset/tame-ducks-ring.md
@@ -0,0 +1,5 @@
+---
+"@primer/react": major
+---
+
+Update CheckboxGroup component to no longer support sx
diff --git a/e2e/components/CheckboxGroup.test.ts b/e2e/components/CheckboxGroup.test.ts
index d8f0ca44264..adb846d93f8 100644
--- a/e2e/components/CheckboxGroup.test.ts
+++ b/e2e/components/CheckboxGroup.test.ts
@@ -23,10 +23,6 @@ const stories = [
     title: 'Visually Hidden Label',
     id: 'components-checkboxgroup-features--visually-hidden-label',
   },
-  {
-    title: 'SX Props',
-    id: 'components-checkboxgroup-dev--sx-props',
-  },
 ] as const
 
 test.describe('CheckboxGroup', () => {
diff --git a/packages/react/src/CheckboxGroup/CheckboxGroup.dev.stories.tsx b/packages/react/src/CheckboxGroup/CheckboxGroup.dev.stories.tsx
deleted file mode 100644
index 2a7130df9e4..00000000000
--- a/packages/react/src/CheckboxGroup/CheckboxGroup.dev.stories.tsx
+++ /dev/null
@@ -1,48 +0,0 @@
-import type {Meta} from '@storybook/react-vite'
-import {Checkbox, CheckboxGroup, FormControl} from '..'
-
-export default {
-  title: 'Components/CheckboxGroup/Dev',
-  component: CheckboxGroup,
-  parameters: {controls: {exclude: ['aria-labelledby', 'id', 'onChange', 'sx']}},
-} as Meta
-
-export const SxProps = () => (
-  <CheckboxGroup
-    sx={{
-      color: 'var(--fgColor-default, var(--color-fg-default))',
-      my: '15px',
-    }}
-  >
-    <CheckboxGroup.Caption
-      sx={{
-        color: 'fg.muted',
-        fontSize: 0,
-        fontWeight: 400,
-      }}
-    >
-      Caption
-    </CheckboxGroup.Caption>
-    <CheckboxGroup.Label
-      sx={{
-        color: 'var(--fgColor-default, var(--color-fg-default))',
-        fontSize: ['14px'],
-        fontWeight: 600,
-      }}
-    >
-      Choices
-    </CheckboxGroup.Label>
-    <FormControl required>
-      <Checkbox value="one" defaultChecked />
-      <FormControl.Label>Choice one</FormControl.Label>
-    </FormControl>
-    <FormControl>
-      <Checkbox value="two" defaultChecked />
-      <FormControl.Label>Choice two</FormControl.Label>
-    </FormControl>
-    <FormControl>
-      <Checkbox value="three" />
-      <FormControl.Label>Choice three</FormControl.Label>
-    </FormControl>
-  </CheckboxGroup>
-)
diff --git a/packages/react/src/CheckboxGroup/CheckboxGroup.docs.json b/packages/react/src/CheckboxGroup/CheckboxGroup.docs.json
index 6db6a947822..171bf3987de 100644
--- a/packages/react/src/CheckboxGroup/CheckboxGroup.docs.json
+++ b/packages/react/src/CheckboxGroup/CheckboxGroup.docs.json
@@ -61,11 +61,6 @@
       "type": "boolean",
       "defaultValue": "false",
       "description": "If true, the user must make a selection before the owning form can be submitted"
-    },
-    {
-      "name": "sx",
-      "type": "SystemStyleObject",
-      "deprecated": true
     }
   ],
   "subcomponents": [
@@ -77,11 +72,6 @@
           "type": "boolean",
           "defaultValue": "false",
           "description": "If true, the fieldset legend will be visually hidden"
-        },
-        {
-          "name": "sx",
-          "type": "SystemStyleObject",
-          "deprecated": true
         }
       ]
     },
@@ -93,11 +83,6 @@
           "type": "React.ReactNode",
           "defaultValue": "",
           "description": "The caption content"
-        },
-        {
-          "name": "sx",
-          "type": "SystemStyleObject",
-          "deprecated": true
         }
       ]
     },
@@ -116,13 +101,8 @@
           "defaultValue": "",
           "required": true,
           "description": "Changes the visual style to match the validation status"
-        },
-        {
-          "name": "sx",
-          "type": "SystemStyleObject",
-          "deprecated": true
         }
       ]
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/packages/react/src/CheckboxGroup/CheckboxGroup.tsx b/packages/react/src/CheckboxGroup/CheckboxGroup.tsx
index b519bd85b27..c75c27ca61e 100644
--- a/packages/react/src/CheckboxGroup/CheckboxGroup.tsx
+++ b/packages/react/src/CheckboxGroup/CheckboxGroup.tsx
@@ -6,7 +6,6 @@ import CheckboxOrRadioGroupCaption from '../internal/components/CheckboxOrRadioG
 import CheckboxOrRadioGroupLabel from '../internal/components/CheckboxOrRadioGroup/CheckboxOrRadioGroupLabel'
 import CheckboxOrRadioGroupValidation from '../internal/components/CheckboxOrRadioGroup/CheckboxOrRadioGroupValidation'
 import {useRenderForcingRef} from '../hooks'
-import type {SxProp} from '../sx'
 import FormControl from '../FormControl'
 import Checkbox from '../Checkbox/Checkbox'
 import {CheckboxGroupContext} from './CheckboxGroupContext'
@@ -16,8 +15,7 @@ type CheckboxGroupProps = {
    * An onChange handler that gets called when any of the checkboxes change
    */
   onChange?: (selected: string[], e?: ChangeEvent<HTMLInputElement>) => void
-} & CheckboxOrRadioGroupProps &
-  SxProp
+} & CheckboxOrRadioGroupProps
 
 const CheckboxGroup: FC<React.PropsWithChildren<CheckboxGroupProps>> = ({children, disabled, onChange, ...rest}) => {
   const formControlComponentChildren = React.Children.toArray(children)