diff --git a/deno_dist/client/client.ts b/deno_dist/client/client.ts
index e6bbb2b7c..de04ee7f4 100644
--- a/deno_dist/client/client.ts
+++ b/deno_dist/client/client.ts
@@ -3,7 +3,13 @@ import type { ValidationTargets } from '../types.ts'
 import { serialize } from '../utils/cookie.ts'
 import type { UnionToIntersection } from '../utils/types.ts'
 import type { Callback, Client, ClientRequestOptions } from './types.ts'
-import { deepMerge, mergePath, removeIndexString, replaceUrlParam } from './utils.ts'
+import {
+  deepMerge,
+  mergePath,
+  removeIndexString,
+  replaceUrlParam,
+  replaceUrlProtocol,
+} from './utils.ts'
 
 const createProxy = (callback: Callback, path: string[]) => {
   const proxy: unknown = new Proxy(() => {}, {
@@ -147,8 +153,11 @@ export const hc = <T extends Hono<any, any, any>>(
       return new URL(url)
     }
     if (method === 'ws') {
-      const targetUrl =
-        opts.args[0] && opts.args[0].param ? replaceUrlParam(url, opts.args[0].param) : url
+      const targetUrl = replaceUrlProtocol(
+        opts.args[0] && opts.args[0].param ? replaceUrlParam(url, opts.args[0].param) : url,
+        'ws'
+      )
+
       return new WebSocket(targetUrl)
     }
 
diff --git a/deno_dist/client/utils.ts b/deno_dist/client/utils.ts
index 517993619..ccaf84095 100644
--- a/deno_dist/client/utils.ts
+++ b/deno_dist/client/utils.ts
@@ -15,6 +15,15 @@ export const replaceUrlParam = (urlString: string, params: Record<string, string
   return urlString
 }
 
+export const replaceUrlProtocol = (urlString: string, protocol: 'ws' | 'http') => {
+  switch (protocol) {
+    case 'ws':
+      return urlString.replace(/^http/, 'ws')
+    case 'http':
+      return urlString.replace(/^ws/, 'http')
+  }
+}
+
 export const removeIndexString = (urlSting: string) => {
   return urlSting.replace(/\/index$/, '')
 }
diff --git a/src/client/client.test.ts b/src/client/client.test.ts
index 799f555a5..afe7f9fb4 100644
--- a/src/client/client.test.ts
+++ b/src/client/client.test.ts
@@ -4,6 +4,7 @@
 import { rest } from 'msw'
 import { setupServer } from 'msw/node'
 import { expectTypeOf, vi } from 'vitest'
+import { upgradeWebSocket } from '../helper'
 import { Hono } from '../hono'
 import { parse } from '../utils/cookie'
 import type { Equal, Expect } from '../utils/types'
@@ -686,3 +687,58 @@ describe('Dynamic headers', () => {
     expect(data.requestDynamic).toEqual('two')
   })
 })
+
+describe('WebSocket URL Protocol Translation', () => {
+  const app = new Hono()
+  const route = app.get(
+    '/',
+    upgradeWebSocket((c) => ({
+      onMessage(event, ws) {
+        console.log(`Message from client: ${event.data}`)
+        ws.send('Hello from server!')
+      },
+      onClose: () => {
+        console.log('Connection closed')
+      },
+    }))
+  )
+
+  type AppType = typeof route
+
+  const server = setupServer()
+  const webSocketMock = vi.fn()
+
+  beforeAll(() => server.listen())
+  beforeEach(() => {
+    vi.stubGlobal('WebSocket', webSocketMock)
+  })
+  afterEach(() => {
+    vi.clearAllMocks()
+    server.resetHandlers()
+  })
+  afterAll(() => server.close())
+
+  it('Translates HTTP to ws', async () => {
+    const client = hc<AppType>('http://localhost')
+    client.index.$ws()
+    expect(webSocketMock).toHaveBeenCalledWith('ws://localhost/index')
+  })
+
+  it('Translates HTTPS to wss', async () => {
+    const client = hc<AppType>('https://localhost')
+    client.index.$ws()
+    expect(webSocketMock).toHaveBeenCalledWith('wss://localhost/index')
+  })
+
+  it('Keeps ws unchanged', async () => {
+    const client = hc<AppType>('ws://localhost')
+    client.index.$ws()
+    expect(webSocketMock).toHaveBeenCalledWith('ws://localhost/index')
+  })
+
+  it('Keeps wss unchanged', async () => {
+    const client = hc<AppType>('wss://localhost')
+    client.index.$ws()
+    expect(webSocketMock).toHaveBeenCalledWith('wss://localhost/index')
+  })
+})
diff --git a/src/client/client.ts b/src/client/client.ts
index 8165c57cc..5c609ea61 100644
--- a/src/client/client.ts
+++ b/src/client/client.ts
@@ -3,7 +3,13 @@ import type { ValidationTargets } from '../types'
 import { serialize } from '../utils/cookie'
 import type { UnionToIntersection } from '../utils/types'
 import type { Callback, Client, ClientRequestOptions } from './types'
-import { deepMerge, mergePath, removeIndexString, replaceUrlParam } from './utils'
+import {
+  deepMerge,
+  mergePath,
+  removeIndexString,
+  replaceUrlParam,
+  replaceUrlProtocol,
+} from './utils'
 
 const createProxy = (callback: Callback, path: string[]) => {
   const proxy: unknown = new Proxy(() => {}, {
@@ -147,8 +153,11 @@ export const hc = <T extends Hono<any, any, any>>(
       return new URL(url)
     }
     if (method === 'ws') {
-      const targetUrl =
-        opts.args[0] && opts.args[0].param ? replaceUrlParam(url, opts.args[0].param) : url
+      const targetUrl = replaceUrlProtocol(
+        opts.args[0] && opts.args[0].param ? replaceUrlParam(url, opts.args[0].param) : url,
+        'ws'
+      )
+
       return new WebSocket(targetUrl)
     }
 
diff --git a/src/client/utils.test.ts b/src/client/utils.test.ts
index 32ddfe415..3a345f5b2 100644
--- a/src/client/utils.test.ts
+++ b/src/client/utils.test.ts
@@ -1,4 +1,10 @@
-import { deepMerge, mergePath, removeIndexString, replaceUrlParam } from './utils'
+import {
+  deepMerge,
+  mergePath,
+  removeIndexString,
+  replaceUrlParam,
+  replaceUrlProtocol,
+} from './utils'
 
 describe('mergePath', () => {
   it('Should merge paths correctly', () => {
@@ -42,6 +48,32 @@ describe('replaceUrlParams', () => {
   })
 })
 
+describe('replaceUrlProtocol', () => {
+  it('Should replace http to ws', () => {
+    const url = 'http://localhost'
+    const newUrl = replaceUrlProtocol(url, 'ws')
+    expect(newUrl).toBe('ws://localhost')
+  })
+
+  it('Should replace https to wss', () => {
+    const url = 'https://localhost'
+    const newUrl = replaceUrlProtocol(url, 'ws')
+    expect(newUrl).toBe('wss://localhost')
+  })
+
+  it('Should replace ws to http', () => {
+    const url = 'ws://localhost'
+    const newUrl = replaceUrlProtocol(url, 'http')
+    expect(newUrl).toBe('http://localhost')
+  })
+
+  it('Should replace wss to https', () => {
+    const url = 'wss://localhost'
+    const newUrl = replaceUrlProtocol(url, 'http')
+    expect(newUrl).toBe('https://localhost')
+  })
+})
+
 describe('removeIndexString', () => {
   it('Should remove last `/index` string', () => {
     let url = 'http://localhost/index'
diff --git a/src/client/utils.ts b/src/client/utils.ts
index d46ce242f..2f6887242 100644
--- a/src/client/utils.ts
+++ b/src/client/utils.ts
@@ -15,6 +15,15 @@ export const replaceUrlParam = (urlString: string, params: Record<string, string
   return urlString
 }
 
+export const replaceUrlProtocol = (urlString: string, protocol: 'ws' | 'http') => {
+  switch (protocol) {
+    case 'ws':
+      return urlString.replace(/^http/, 'ws')
+    case 'http':
+      return urlString.replace(/^ws/, 'http')
+  }
+}
+
 export const removeIndexString = (urlSting: string) => {
   return urlSting.replace(/\/index$/, '')
 }