diff --git a/src/providers/index.js b/src/providers/index.js
index 1c22fa4d21..d22629e2d8 100644
--- a/src/providers/index.js
+++ b/src/providers/index.js
@@ -13,6 +13,7 @@ import GitLab from './gitlab'
 import Google from './google'
 import IdentityServer4 from './identity-server4'
 import LinkedIn from './linkedin'
+import MailRu from './mailru'
 import Mixer from './mixer'
 import Okta from './okta'
 import Slack from './slack'
@@ -37,6 +38,7 @@ export default {
   Google,
   IdentityServer4,
   LinkedIn,
+  MailRu,
   Mixer,
   Okta,
   Slack,
diff --git a/src/providers/mailru.js b/src/providers/mailru.js
new file mode 100644
index 0000000000..7c2f42347d
--- /dev/null
+++ b/src/providers/mailru.js
@@ -0,0 +1,26 @@
+export default (options) => {
+  return {
+    id: 'mailru',
+    name: 'Mail.ru',
+    type: 'oauth',
+    version: '2.0',
+    scope: 'userinfo',
+    params: {
+      grant_type: 'authorization_code'
+    },
+    accessTokenUrl: 'https://oauth.mail.ru/token',
+    requestTokenUrl: 'https://oauth.mail.ru/token',
+    authorizationUrl: 'https://oauth.mail.ru/login?response_type=code',
+    profileUrl: 'https://oauth.mail.ru/userinfo',
+    profile: (profile) => {
+      return {
+        id: profile.id,
+        name: profile.name,
+        email: profile.email,
+        image: profile.image,
+      }
+    },
+    setGetAccessTokenProfileUrl: true,
+    ...options
+  }
+}
diff --git a/src/server/lib/oauth/callback.js b/src/server/lib/oauth/callback.js
index 474efd4c74..f23dfb2f77 100644
--- a/src/server/lib/oauth/callback.js
+++ b/src/server/lib/oauth/callback.js
@@ -255,10 +255,18 @@ async function _getOAuthAccessToken (code, provider, callback) {
 function _get (provider, accessToken, callback) {
   const url = provider.profileUrl
   const headers = provider.headers || {}
+  const setGetAccessTokenProfileUrl = provider.setGetAccessTokenProfileUrl !== null ? provider.setGetAccessTokenProfileUrl : true
 
   if (this._useAuthorizationHeaderForGET) {
     headers.Authorization = this.buildAuthHeader(accessToken)
 
+    // Mail.ru requires 'access_token' as URL request parameter
+    if (setGetAccessTokenProfileUrl) {
+      if (provider.profileUrl) {
+        url = provider.profileUrl + '?access_token=' + accessToken
+      }
+    }
+
     // This line is required for Twitch
     headers['Client-ID'] = provider.clientId
     accessToken = null
diff --git a/www/docs/configuration/callbacks.md b/www/docs/configuration/callbacks.md
index 71a0faf2a0..93f528cbcb 100644
--- a/www/docs/configuration/callbacks.md
+++ b/www/docs/configuration/callbacks.md
@@ -14,21 +14,19 @@ If you want to pass data such as an Access Token or User ID to the browser when
 You can specify a handler for any of the callbacks below.
 
 ```js title="pages/api/auth/[...nextauth].js"
-...
-  callbacks: {
-    signIn: async (user, account, profile) => {
-      return Promise.resolve(true)
-    },
-    redirect: async (url, baseUrl) => {
-      return Promise.resolve(baseUrl)
-    },
-    session: async (session, user) => {
-      return Promise.resolve(session)
-    },
-    jwt: async (token, user, account, profile, isNewUser) => {
-      return Promise.resolve(token)
-    }
-...
+callbacks: {
+  signIn: async (user, account, profile) => {
+    return Promise.resolve(true)
+  },
+  redirect: async (url, baseUrl) => {
+    return Promise.resolve(baseUrl)
+  },
+  session: async (session, user) => {
+    return Promise.resolve(session)
+  },
+  jwt: async (token, user, account, profile, isNewUser) => {
+    return Promise.resolve(token)
+  }
 }
 ```
 
diff --git a/www/docs/configuration/providers.md b/www/docs/configuration/providers.md
index 05b7f21577..f96b950d13 100644
--- a/www/docs/configuration/providers.md
+++ b/www/docs/configuration/providers.md
@@ -24,6 +24,7 @@ NextAuth.js is designed to work with any OAuth service, it supports OAuth 1.0, 1
 * [Google](/providers/google)
 * [IdentityServer4](/providers/identity-server4)
 * [LinkedIn](/providers/LinkedIn)
+* [Mail.ru](/providers/Mail.ru)
 * [Mixer](/providers/Mixer)
 * [Okta](/providers/Okta)
 * [Slack](/providers/slack)
@@ -218,7 +219,7 @@ The Credentials provider can only be used if JSON Web Tokens are enabled for ses
 :::
 
 <!-- React Image Component -->
-export const Image = ({ children, src, alt = '' }) => ( 
+export const Image = ({ children, src, alt = '' }) => (
   <div
     style={{
       padding: '0.2rem',
diff --git a/www/docs/providers/mailru.md b/www/docs/providers/mailru.md
new file mode 100644
index 0000000000..02f1636156
--- /dev/null
+++ b/www/docs/providers/mailru.md
@@ -0,0 +1,25 @@
+---
+id: Mail.ru
+title: Mail.ru
+---
+
+## Documentation
+
+https://o2.mail.ru/docs
+
+## Configuration
+
+https://o2.mail.ru/app/
+
+## Example
+
+```js
+import Providers from `next-auth/providers`
+...
+providers: [
+  Providers.MailRu({
+    clientId: process.env.MAILRU_CLIENT_ID,
+    clientSecret: process.env.MAILRU_CLIENT_SECRET
+  })
+]
+...
diff --git a/www/sidebars.js b/www/sidebars.js
index 88a73695df..ba5f0a2de9 100644
--- a/www/sidebars.js
+++ b/www/sidebars.js
@@ -38,6 +38,7 @@ module.exports = {
       'providers/google',
       'providers/identity-server4',
       'providers/linkedin',
+      'providers/Mail.ru',
       'providers/mixer',
       'providers/okta',
       'providers/slack',