diff --git a/.changeset/old-schools-happen.md b/.changeset/old-schools-happen.md
new file mode 100644
index 00000000000..41d5ab20f6b
--- /dev/null
+++ b/.changeset/old-schools-happen.md
@@ -0,0 +1,5 @@
+---
+"@primer/react": patch
+---
+
+Add monospace prop to textinput
diff --git a/docs/content/TextInput.mdx b/docs/content/TextInput.mdx
index e74cf6a3006..b3bdfe57be6 100644
--- a/docs/content/TextInput.mdx
+++ b/docs/content/TextInput.mdx
@@ -81,6 +81,18 @@ TextInput is a form component to add default styling to the native text input.
 <TextInput contrast aria-label="Zipcode" name="zipcode" placeholder="Find user" autoComplete="postal-code" />
 ```
 
+## Monospace text input
+
+```jsx live
+<TextInput
+  monospace
+  aria-label="personal access token"
+  name="pat"
+  leadingVisual={CheckIcon}
+  placeholder="github_pat_abcdefg123456789"
+/>
+```
+
 ## Props
 
 ### TextInput
@@ -103,6 +115,12 @@ TextInput is a form component to add default styling to the native text input.
     defaultValue="false"
     description="Changes background color to a higher contrast color"
   />
+  <PropsTableRow
+    name="monospace"
+    type="boolean"
+    defaultValue="false"
+    description="Shows input in monospace font"
+  />
   <PropsTableRow name='size' type="'small' | 'medium' | 'large'"     description="Creates a smaller or larger input than the default." />
 
 <PropsTableRow
diff --git a/src/TextInput.tsx b/src/TextInput.tsx
index e647a3ac4dd..bce41f70637 100644
--- a/src/TextInput.tsx
+++ b/src/TextInput.tsx
@@ -12,7 +12,7 @@ type NonPassthroughProps = {
   trailingVisual?: string | React.ComponentType<{className?: string}>
 } & Pick<
   ComponentProps<typeof TextInputWrapper>,
-  'block' | 'contrast' | 'disabled' | 'sx' | 'width' | 'maxWidth' | 'minWidth' | 'variant' | 'size'
+  'block' | 'contrast' | 'disabled' | 'monospace' | 'sx' | 'width' | 'maxWidth' | 'minWidth' | 'variant' | 'size'
 >
 
 // Note: using ComponentProps instead of ComponentPropsWithoutRef here would cause a type issue where `css` is a required prop.
@@ -29,6 +29,7 @@ const TextInput = React.forwardRef<HTMLInputElement, TextInputInternalProps>(
       className,
       contrast,
       disabled,
+      monospace,
       validationStatus,
       sx: sxProp,
       size: sizeProp,
@@ -52,6 +53,7 @@ const TextInput = React.forwardRef<HTMLInputElement, TextInputInternalProps>(
         validationStatus={validationStatus}
         contrast={contrast}
         disabled={disabled}
+        monospace={monospace}
         sx={sxProp}
         size={sizeProp}
         width={widthProp}
diff --git a/src/_TextInputWrapper.tsx b/src/_TextInputWrapper.tsx
index 5b52ae93496..3b59af94162 100644
--- a/src/_TextInputWrapper.tsx
+++ b/src/_TextInputWrapper.tsx
@@ -45,6 +45,7 @@ export type StyledBaseWrapperProps = {
   block?: boolean
   contrast?: boolean
   disabled?: boolean
+  monospace?: boolean
   validationStatus?: FormValidationStatus
 } & WidthProps &
   MinWidthProps &
@@ -104,6 +105,12 @@ export const TextInputBaseWrapper = styled.span<StyledBaseWrapperProps>`
       background-color: ${get('colors.input.disabledBg')};
       border-color: ${get('colors.border.default')};
     `}
+
+    ${props =>
+    props.monospace &&
+    css`
+      font-family: ${get('fonts.mono')};
+    `}
   
   ${props =>
     props.validationStatus === 'error' &&
diff --git a/src/__tests__/TextInput.test.tsx b/src/__tests__/TextInput.test.tsx
index 3e8b071e3c4..ec2b6e05f0c 100644
--- a/src/__tests__/TextInput.test.tsx
+++ b/src/__tests__/TextInput.test.tsx
@@ -46,7 +46,10 @@ describe('TextInput', () => {
   })
 
   it('renders contrast', () => {
-    expect(render(<TextInput name="zipcode" status="contrast" />)).toMatchSnapshot()
+    expect(render(<TextInput name="zipcode" contrast />)).toMatchSnapshot()
+  })
+  it('renders monospace', () => {
+    expect(render(<TextInput name="zipcode" monospace />)).toMatchSnapshot()
   })
 
   it('renders placeholder', () => {
diff --git a/src/__tests__/__snapshots__/TextInput.test.tsx.snap b/src/__tests__/__snapshots__/TextInput.test.tsx.snap
index 23bc8c7cd1c..7791f796b01 100644
--- a/src/__tests__/__snapshots__/TextInput.test.tsx.snap
+++ b/src/__tests__/__snapshots__/TextInput.test.tsx.snap
@@ -351,6 +351,7 @@ exports[`TextInput renders contrast 1`] = `
   -ms-flex-align: stretch;
   align-items: stretch;
   min-height: 32px;
+  background-color: #f6f8fa;
   background-repeat: no-repeat;
   background-position: right 8px center;
   padding-left: 0;
@@ -765,6 +766,111 @@ exports[`TextInput renders leadingVisual 1`] = `
 </span>
 `;
 
+exports[`TextInput renders monospace 1`] = `
+.c1 {
+  border: 0;
+  font-size: inherit;
+  font-family: inherit;
+  background-color: transparent;
+  -webkit-appearance: none;
+  color: inherit;
+  width: 100%;
+}
+
+.c1:focus {
+  outline: 0;
+}
+
+.c0 {
+  font-size: 14px;
+  line-height: 20px;
+  color: #24292f;
+  vertical-align: middle;
+  background-color: #ffffff;
+  border: 1px solid #d0d7de;
+  border-radius: 6px;
+  outline: none;
+  box-shadow: inset 0 1px 0 rgba(208,215,222,0.2);
+  cursor: text;
+  display: -webkit-inline-box;
+  display: -webkit-inline-flex;
+  display: -ms-inline-flexbox;
+  display: inline-flex;
+  -webkit-align-items: stretch;
+  -webkit-box-align: stretch;
+  -ms-flex-align: stretch;
+  align-items: stretch;
+  min-height: 32px;
+  font-family: SFMono-Regular,Consolas,"Liberation Mono",Menlo,Courier,monospace;
+  background-repeat: no-repeat;
+  background-position: right 8px center;
+  padding-left: 0;
+  padding-right: 0;
+}
+
+.c0::-webkit-input-placeholder {
+  color: #6e7781;
+}
+
+.c0::-moz-placeholder {
+  color: #6e7781;
+}
+
+.c0:-ms-input-placeholder {
+  color: #6e7781;
+}
+
+.c0::placeholder {
+  color: #6e7781;
+}
+
+.c0:focus-within {
+  border-color: #0969da;
+  box-shadow: 0 0 0 3px rgba(9,105,218,0.3);
+}
+
+.c0 > textarea {
+  padding: 12px;
+}
+
+.c0 >:not(:last-child) {
+  margin-right: 8px;
+}
+
+.c0 .TextInput-icon {
+  -webkit-align-self: center;
+  -ms-flex-item-align: center;
+  align-self: center;
+  color: #57606a;
+  -webkit-flex-shrink: 0;
+  -ms-flex-negative: 0;
+  flex-shrink: 0;
+}
+
+.c0 > input,
+.c0 > select {
+  padding-left: 12px;
+  padding-right: 12px;
+}
+
+@media (min-width:768px) {
+  .c0 {
+    font-size: 14px;
+  }
+}
+
+<span
+  className="c0 TextInput-wrapper"
+>
+  <input
+    className="c1"
+    data-component="input"
+    name="zipcode"
+    type="text"
+  />
+</span>
+`;
+
 exports[`TextInput renders placeholder 1`] = `
 .c1 {
   border: 0;
diff --git a/src/stories/TextInput.stories.tsx b/src/stories/TextInput.stories.tsx
index 02fdd3d92f5..c9a06c451f0 100644
--- a/src/stories/TextInput.stories.tsx
+++ b/src/stories/TextInput.stories.tsx
@@ -39,6 +39,13 @@ export default {
         type: 'boolean'
       }
     },
+    monospace: {
+      name: 'Monospace',
+      defaultValue: false,
+      control: {
+        type: 'boolean'
+      }
+    },
     variant: {
       name: 'Variants',
       options: ['small', 'medium', 'large'],