diff --git a/.changeset/brown-suns-clap.md b/.changeset/brown-suns-clap.md
new file mode 100644
index 00000000000..3c83476b74d
--- /dev/null
+++ b/.changeset/brown-suns-clap.md
@@ -0,0 +1,13 @@
+---
+"@clerk/astro": patch
+"@clerk/nextjs": patch
+"@clerk/shared": patch
+---
+
+Previously the `createPathMatcher()` function was re-implemented both in `@clerk/astro` and `@clerk/nextjs`, this PR moves this logic to `@clerk/shared`.
+
+You can use it like so:
+
+```ts
+import { createPathMatcher } from '@clerk/shared/pathMatcher'
+```
diff --git a/packages/astro/src/server/route-matcher.ts b/packages/astro/src/server/route-matcher.ts
index 16f0a747b06..85987b500aa 100644
--- a/packages/astro/src/server/route-matcher.ts
+++ b/packages/astro/src/server/route-matcher.ts
@@ -1,13 +1,7 @@
-import { pathToRegexp } from '@clerk/shared/pathToRegexp';
-import type { Autocomplete } from '@clerk/types';
+import { createPathMatcher, type PathMatcherParam } from '@clerk/shared/pathMatcher';
 
-type WithPathPatternWildcard<T = string> = `${T & string}(.*)`;
+export type RouteMatcherParam = PathMatcherParam;
 
-type RouteMatcherRoutes = Autocomplete<WithPathPatternWildcard>;
-
-export type RouteMatcherParam = Array<RegExp | RouteMatcherRoutes> | RegExp | RouteMatcherRoutes;
-
-// TODO-SHARED: This can be moved to @clerk/shared as an identical implementation exists in @clerk/nextjs
 /**
  * Returns a function that accepts a `Request` object and returns whether the request matches the list of
  * predefined routes that can be passed in as the first argument.
@@ -17,11 +11,6 @@ export type RouteMatcherParam = Array<RegExp | RouteMatcherRoutes> | RegExp | Ro
  * For more information, see: https://clerk.com/docs
  */
 export const createRouteMatcher = (routes: RouteMatcherParam) => {
-  const routePatterns = [routes || ''].flat().filter(Boolean);
-  const matchers = precomputePathRegex(routePatterns);
-  return (req: Request) => matchers.some(matcher => matcher.test(new URL(req.url).pathname));
-};
-
-const precomputePathRegex = (patterns: Array<string | RegExp>) => {
-  return patterns.map(pattern => (pattern instanceof RegExp ? pattern : pathToRegexp(pattern)));
+  const matcher = createPathMatcher(routes);
+  return (req: Request) => matcher(new URL(req.url).pathname);
 };
diff --git a/packages/nextjs/src/server/routeMatcher.ts b/packages/nextjs/src/server/routeMatcher.ts
index b4c05c3bb31..54671283dc5 100644
--- a/packages/nextjs/src/server/routeMatcher.ts
+++ b/packages/nextjs/src/server/routeMatcher.ts
@@ -1,11 +1,9 @@
-import { pathToRegexp } from '@clerk/shared/pathToRegexp';
+import { createPathMatcher, type WithPathPatternWildcard } from '@clerk/shared/pathMatcher';
 import type { Autocomplete } from '@clerk/types';
 import type Link from 'next/link';
 import type { NextRequest } from 'next/server';
 
-type WithPathPatternWildcard<T> = `${T & string}(.*)`;
 type NextTypedRoute<T = Parameters<typeof Link>['0']['href']> = T extends string ? T : never;
-
 type RouteMatcherWithNextTypedRoutes = Autocomplete<WithPathPatternWildcard<NextTypedRoute> | NextTypedRoute>;
 
 export type RouteMatcherParam =
@@ -27,11 +25,6 @@ export const createRouteMatcher = (routes: RouteMatcherParam) => {
     return (req: NextRequest) => routes(req);
   }
 
-  const routePatterns = [routes || ''].flat().filter(Boolean);
-  const matchers = precomputePathRegex(routePatterns);
-  return (req: NextRequest) => matchers.some(matcher => matcher.test(req.nextUrl.pathname));
-};
-
-const precomputePathRegex = (patterns: Array<string | RegExp>) => {
-  return patterns.map(pattern => (pattern instanceof RegExp ? pattern : pathToRegexp(pattern)));
+  const matcher = createPathMatcher(routes);
+  return (req: NextRequest) => matcher(req.nextUrl.pathname);
 };
diff --git a/packages/shared/package.json b/packages/shared/package.json
index eb0c6959368..22139d1dd5a 100644
--- a/packages/shared/package.json
+++ b/packages/shared/package.json
@@ -114,7 +114,8 @@
     "devBrowser",
     "object",
     "oauth",
-    "web3"
+    "web3",
+    "pathMatcher"
   ],
   "scripts": {
     "build": "tsup",
diff --git a/packages/shared/src/__tests__/pathMatcher.test.ts b/packages/shared/src/__tests__/pathMatcher.test.ts
new file mode 100644
index 00000000000..525aa106d98
--- /dev/null
+++ b/packages/shared/src/__tests__/pathMatcher.test.ts
@@ -0,0 +1,53 @@
+import { createPathMatcher } from '../pathMatcher';
+
+jest.mock('../pathToRegexp', () => ({
+  pathToRegexp: (pattern: string) => new RegExp(`^${pattern.replace('(.*)', '.*')}$`),
+}));
+
+describe('createPathMatcher', () => {
+  test('matches exact paths', () => {
+    const matcher = createPathMatcher('/foo');
+    expect(matcher('/foo')).toBe(true);
+    expect(matcher('/bar')).toBe(false);
+  });
+
+  test('matches wildcard patterns', () => {
+    const matcher = createPathMatcher('/foo(.*)');
+    expect(matcher('/foo')).toBe(true);
+    expect(matcher('/foo/bar')).toBe(true);
+    expect(matcher('/foo/bar/baz')).toBe(true);
+    expect(matcher('/bar')).toBe(false);
+  });
+
+  test('matches array of patterns', () => {
+    const matcher = createPathMatcher(['/foo', '/bar(.*)']);
+    expect(matcher('/foo')).toBe(true);
+    expect(matcher('/bar')).toBe(true);
+    expect(matcher('/bar/baz')).toBe(true);
+    expect(matcher('/baz')).toBe(false);
+    expect(matcher('/foo/bar')).toBe(false);
+  });
+
+  test('matches RegExp patterns', () => {
+    const matcher = createPathMatcher(/^\/foo\/.*$/);
+    expect(matcher('/foo/bar')).toBe(true);
+    expect(matcher('/foo/baz')).toBe(true);
+    expect(matcher('/bar/foo')).toBe(false);
+  });
+
+  test('handles empty or falsy inputs', () => {
+    const matcher = createPathMatcher('');
+    expect(matcher('/any/path')).toBe(false);
+
+    const nullMatcher = createPathMatcher(null as any);
+    expect(nullMatcher('/any/path')).toBe(false);
+  });
+
+  test('handles mixed pattern types', () => {
+    const matcher = createPathMatcher(['/foo(.*)', /^\/bar\/.*$/, '/baz']);
+    expect(matcher('/foo/anything')).toBe(true);
+    expect(matcher('/bar/anything')).toBe(true);
+    expect(matcher('/baz')).toBe(true);
+    expect(matcher('/qux')).toBe(false);
+  });
+});
diff --git a/packages/shared/src/index.ts b/packages/shared/src/index.ts
index aa98558a41d..984c4c510c1 100644
--- a/packages/shared/src/index.ts
+++ b/packages/shared/src/index.ts
@@ -35,3 +35,4 @@ export * from './object';
 export * from './logger';
 export { createWorkerTimers } from './workerTimers';
 export { DEV_BROWSER_JWT_KEY, extractDevBrowserJWTFromURL, setDevBrowserJWTInURL } from './devBrowser';
+export * from './pathMatcher';
diff --git a/packages/shared/src/pathMatcher.ts b/packages/shared/src/pathMatcher.ts
new file mode 100644
index 00000000000..f2f07097e3a
--- /dev/null
+++ b/packages/shared/src/pathMatcher.ts
@@ -0,0 +1,23 @@
+import type { Autocomplete } from '@clerk/types';
+
+import { pathToRegexp } from './pathToRegexp';
+
+export type WithPathPatternWildcard<T = string> = `${T & string}(.*)`;
+export type PathPattern = Autocomplete<WithPathPatternWildcard>;
+export type PathMatcherParam = Array<RegExp | PathPattern> | RegExp | PathPattern;
+
+const precomputePathRegex = (patterns: Array<string | RegExp>) => {
+  return patterns.map(pattern => (pattern instanceof RegExp ? pattern : pathToRegexp(pattern)));
+};
+
+/**
+ * Creates a function that matches paths against a set of patterns.
+ *
+ * @param patterns - A string, RegExp, or array of patterns to match against
+ * @returns A function that takes a pathname and returns true if it matches any of the patterns
+ */
+export const createPathMatcher = (patterns: PathMatcherParam) => {
+  const routePatterns = [patterns || ''].flat().filter(Boolean);
+  const matchers = precomputePathRegex(routePatterns);
+  return (pathname: string) => matchers.some(matcher => matcher.test(pathname));
+};