diff --git a/packages/vike-react/src/+config.ts b/packages/vike-react/src/+config.ts
index 2b1a3de4..d073f9b7 100644
--- a/packages/vike-react/src/+config.ts
+++ b/packages/vike-react/src/+config.ts
@@ -49,6 +49,9 @@ export default {
     _streamIsRequied: {
       env: { server: true }
     },
+    onBeforeRenderClient: {
+      env: { client: true }
+    },
     onAfterRenderClient: {
       env: { client: true }
     },
diff --git a/packages/vike-react/src/renderer/onRenderClient.tsx b/packages/vike-react/src/renderer/onRenderClient.tsx
index fbee996b..d5cc63c0 100644
--- a/packages/vike-react/src/renderer/onRenderClient.tsx
+++ b/packages/vike-react/src/renderer/onRenderClient.tsx
@@ -8,6 +8,8 @@ import { getPageElement } from './getPageElement.js'
 
 let root: ReactDOM.Root
 const onRenderClient: OnRenderClientSync = (pageContext): ReturnType<OnRenderClientSync> => {
+  pageContext.config.onBeforeRenderClient?.(pageContext)
+
   const page = getPageElement(pageContext)
 
   // TODO: implement this? So that, upon errors, onRenderClient() throws an error and Vike can render the error. As of April 2024 it isn't released yet.
diff --git a/packages/vike-react/src/types/Config.ts b/packages/vike-react/src/types/Config.ts
index e2736e0d..4b126c6c 100644
--- a/packages/vike-react/src/types/Config.ts
+++ b/packages/vike-react/src/types/Config.ts
@@ -58,6 +58,13 @@ declare global {
        *
        */
       stream?: boolean
+      /**
+       * Client-side hook called before the page is rendered.
+       */
+
+      // https://github.com/vikejs/vike-react/issues/110
+      onBeforeRenderClient?: (pageContext: PageContextClient) => void
+
       /**
        * Client-side hook called after the page is rendered.
        */