diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index ab2538e..da22ae1 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -6,6 +6,7 @@ v1.6.3
 ------
 * Add server rules API (`instance_rules`)
 * Add confirmation email resend API (`email_resend_confirmation`)
+* Add account lookup API (`account_lookup`)
 
 v1.6.2
 ------
diff --git a/TODO.md b/TODO.md
index 164717a..6964ea3 100644
--- a/TODO.md
+++ b/TODO.md
@@ -31,7 +31,7 @@ Refer to mastodon changelog and API docs for details when implementing, add or m
 -----
 * [x] Add server rules
 * [x] Add POST /api/v1/emails/confirmations to REST API
-* [ ] Add GET /api/v1/accounts/lookup to REST API
+* [x] Add GET /api/v1/accounts/lookup to REST API
 * [ ] Add policy param to POST /api/v1/push/subscriptions in REST API
 * [ ] Add details to error response for POST /api/v1/accounts in REST API
 
diff --git a/docs/index.rst b/docs/index.rst
index 2318a98..8b47fad 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -906,7 +906,7 @@ is specified, Mastodon.py defaults to https.
 .. automethod:: Mastodon.auth_request_url
 .. automethod:: Mastodon.create_account
 .. automethod:: Mastodon.email_resend_confirmation
-    
+
 Versioning
 ----------
 Mastodon.py will check if a certain endpoint is available before doing API
@@ -999,6 +999,8 @@ their relationships.
 .. automethod:: Mastodon.account_followers
 .. automethod:: Mastodon.account_relationships
 .. automethod:: Mastodon.account_search
+.. automethod:: Mastodon.account_lists
+.. automethod:: Mastodon.account_lookup
 
 Reading data: Featured tags
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/mastodon/Mastodon.py b/mastodon/Mastodon.py
index 629a4b2..6e5bc29 100644
--- a/mastodon/Mastodon.py
+++ b/mastodon/Mastodon.py
@@ -1261,6 +1261,19 @@ class Mastodon:
         url = '/api/v1/accounts/{0}/lists'.format(str(id))
         return self.__api_request('GET', url, params)
 
+    @api_version("3.4.0", "3.4.0", __DICT_VERSION_ACCOUNT)
+    def account_lookup(self, acct):
+        """
+        Look up an account from user@instance form (@instance allowed but not required for
+        local accounts). Will only return accounts that the instance already knows about, 
+        and not do any webfinger requests. Use `account_search` if you need to resolve users 
+        through webfinger from remote.
+
+        Returns an `account dict`_.
+        """
+        return self.__api_request('GET', '/api/v1/accounts/lookup', self.__generate_params(locals()))
+    
+
     ###
     # Reading data: Featured hashtags
     ###
diff --git a/tests/cassettes/test_account_lookup.yaml b/tests/cassettes/test_account_lookup.yaml
new file mode 100644
index 0000000..01ed5f7
--- /dev/null
+++ b/tests/cassettes/test_account_lookup.yaml
@@ -0,0 +1,232 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Bearer __MASTODON_PY_TEST_ACCESS_TOKEN
+      Connection:
+      - keep-alive
+      User-Agent:
+      - tests/v311
+    method: GET
+    uri: http://localhost:3000/api/v1/accounts/verify_credentials
+  response:
+    body:
+      string: '{"id":"109366898092282937","username":"mastodonpy_test","acct":"mastodonpy_test","display_name":"","locked":true,"bot":false,"discoverable":null,"group":false,"created_at":"2022-11-18T00:00:00.000Z","note":"","url":"http://localhost:3000/@mastodonpy_test","avatar":"http://localhost:3000/avatars/original/missing.png","avatar_static":"http://localhost:3000/avatars/original/missing.png","header":"http://localhost:3000/headers/original/missing.png","header_static":"http://localhost:3000/headers/original/missing.png","followers_count":0,"following_count":0,"statuses_count":5,"last_status_at":"2022-11-18","noindex":false,"source":{"privacy":"public","sensitive":false,"language":null,"note":"","fields":[],"follow_requests_count":0},"emojis":[],"fields":[],"role":{"id":"-99","name":"","permissions":"65536","color":"","highlighted":false}}'
+    headers:
+      Cache-Control:
+      - no-store
+      Content-Security-Policy:
+      - 'base-uri ''none''; default-src ''none''; frame-ancestors ''none''; font-src
+        ''self'' http://localhost:3000; img-src ''self'' https: data: blob: http://localhost:3000;
+        style-src ''self'' http://localhost:3000 ''nonce-3EN7F4MujpHoVrEZ3s8fag=='';
+        media-src ''self'' https: data: http://localhost:3000; frame-src ''self''
+        https:; manifest-src ''self'' http://localhost:3000; connect-src ''self''
+        data: blob: http://localhost:3000 http://localhost:3000 ws://localhost:4000
+        ws://localhost:3035 http://localhost:3035; script-src ''self'' ''unsafe-inline''
+        ''unsafe-eval'' http://localhost:3000; child-src ''self'' blob: http://localhost:3000;
+        worker-src ''self'' blob: http://localhost:3000'
+      Content-Type:
+      - application/json; charset=utf-8
+      ETag:
+      - W/"dc5952ea4f0e073dc114984e11e688fe"
+      Referrer-Policy:
+      - strict-origin-when-cross-origin
+      Transfer-Encoding:
+      - chunked
+      Vary:
+      - Accept, Origin
+      X-Content-Type-Options:
+      - nosniff
+      X-Download-Options:
+      - noopen
+      X-Frame-Options:
+      - SAMEORIGIN
+      X-Permitted-Cross-Domain-Policies:
+      - none
+      X-Request-Id:
+      - b30300c0-b4d2-4d92-a447-90c4343be34f
+      X-Runtime:
+      - '0.012757'
+      X-XSS-Protection:
+      - 1; mode=block
+    status:
+      code: 200
+      message: OK
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Bearer __MASTODON_PY_TEST_ACCESS_TOKEN
+      Connection:
+      - keep-alive
+      User-Agent:
+      - tests/v311
+    method: GET
+    uri: http://localhost:3000/api/v1/accounts/lookup?acct=kljadklajsdkljlkjlkjlkjasdasd
+  response:
+    body:
+      string: '{"error":"Record not found"}'
+    headers:
+      Cache-Control:
+      - no-store
+      Content-Security-Policy:
+      - 'base-uri ''none''; default-src ''none''; frame-ancestors ''none''; font-src
+        ''self'' http://localhost:3000; img-src ''self'' https: data: blob: http://localhost:3000;
+        style-src ''self'' http://localhost:3000 ''nonce-K3+CoL7Djc57eXE+QOhaqw=='';
+        media-src ''self'' https: data: http://localhost:3000; frame-src ''self''
+        https:; manifest-src ''self'' http://localhost:3000; connect-src ''self''
+        data: blob: http://localhost:3000 http://localhost:3000 ws://localhost:4000
+        ws://localhost:3035 http://localhost:3035; script-src ''self'' ''unsafe-inline''
+        ''unsafe-eval'' http://localhost:3000; child-src ''self'' blob: http://localhost:3000;
+        worker-src ''self'' blob: http://localhost:3000'
+      Content-Type:
+      - application/json; charset=utf-8
+      Referrer-Policy:
+      - strict-origin-when-cross-origin
+      Transfer-Encoding:
+      - chunked
+      Vary:
+      - Accept, Origin
+      X-Content-Type-Options:
+      - nosniff
+      X-Download-Options:
+      - noopen
+      X-Frame-Options:
+      - SAMEORIGIN
+      X-Permitted-Cross-Domain-Policies:
+      - none
+      X-Request-Id:
+      - ad639c09-6937-494b-8d8e-d07c4e57ae17
+      X-Runtime:
+      - '0.007311'
+      X-XSS-Protection:
+      - 1; mode=block
+    status:
+      code: 404
+      message: Not Found
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Bearer __MASTODON_PY_TEST_ACCESS_TOKEN
+      Connection:
+      - keep-alive
+      User-Agent:
+      - tests/v311
+    method: GET
+    uri: http://localhost:3000/api/v1/accounts/lookup?acct=mastodonpy_test
+  response:
+    body:
+      string: '{"id":"109366898092282937","username":"mastodonpy_test","acct":"mastodonpy_test","display_name":"","locked":true,"bot":false,"discoverable":null,"group":false,"created_at":"2022-11-18T00:00:00.000Z","note":"","url":"http://localhost:3000/@mastodonpy_test","avatar":"http://localhost:3000/avatars/original/missing.png","avatar_static":"http://localhost:3000/avatars/original/missing.png","header":"http://localhost:3000/headers/original/missing.png","header_static":"http://localhost:3000/headers/original/missing.png","followers_count":0,"following_count":0,"statuses_count":5,"last_status_at":"2022-11-18","noindex":false,"emojis":[],"fields":[]}'
+    headers:
+      Cache-Control:
+      - no-store
+      Content-Security-Policy:
+      - 'base-uri ''none''; default-src ''none''; frame-ancestors ''none''; font-src
+        ''self'' http://localhost:3000; img-src ''self'' https: data: blob: http://localhost:3000;
+        style-src ''self'' http://localhost:3000 ''nonce-ahGApVKvUFVrZV/lQw3Ckw=='';
+        media-src ''self'' https: data: http://localhost:3000; frame-src ''self''
+        https:; manifest-src ''self'' http://localhost:3000; connect-src ''self''
+        data: blob: http://localhost:3000 http://localhost:3000 ws://localhost:4000
+        ws://localhost:3035 http://localhost:3035; script-src ''self'' ''unsafe-inline''
+        ''unsafe-eval'' http://localhost:3000; child-src ''self'' blob: http://localhost:3000;
+        worker-src ''self'' blob: http://localhost:3000'
+      Content-Type:
+      - application/json; charset=utf-8
+      ETag:
+      - W/"38e63cb43c9359834b66f41070c8c079"
+      Referrer-Policy:
+      - strict-origin-when-cross-origin
+      Transfer-Encoding:
+      - chunked
+      Vary:
+      - Accept, Origin
+      X-Content-Type-Options:
+      - nosniff
+      X-Download-Options:
+      - noopen
+      X-Frame-Options:
+      - SAMEORIGIN
+      X-Permitted-Cross-Domain-Policies:
+      - none
+      X-Request-Id:
+      - 74fa7552-bb6c-4154-8993-aac7ede92f32
+      X-Runtime:
+      - '0.010043'
+      X-XSS-Protection:
+      - 1; mode=block
+    status:
+      code: 200
+      message: OK
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Bearer __MASTODON_PY_TEST_ACCESS_TOKEN
+      Connection:
+      - keep-alive
+      User-Agent:
+      - tests/v311
+    method: GET
+    uri: http://localhost:3000/api/v1/accounts/lookup?acct=mastodonpy_test%40localhost%3A3000
+  response:
+    body:
+      string: '{"id":"109366898092282937","username":"mastodonpy_test","acct":"mastodonpy_test","display_name":"","locked":true,"bot":false,"discoverable":null,"group":false,"created_at":"2022-11-18T00:00:00.000Z","note":"","url":"http://localhost:3000/@mastodonpy_test","avatar":"http://localhost:3000/avatars/original/missing.png","avatar_static":"http://localhost:3000/avatars/original/missing.png","header":"http://localhost:3000/headers/original/missing.png","header_static":"http://localhost:3000/headers/original/missing.png","followers_count":0,"following_count":0,"statuses_count":5,"last_status_at":"2022-11-18","noindex":false,"emojis":[],"fields":[]}'
+    headers:
+      Cache-Control:
+      - no-store
+      Content-Security-Policy:
+      - 'base-uri ''none''; default-src ''none''; frame-ancestors ''none''; font-src
+        ''self'' http://localhost:3000; img-src ''self'' https: data: blob: http://localhost:3000;
+        style-src ''self'' http://localhost:3000 ''nonce-VIxMxXw1sv2+gz5VzvH8xw=='';
+        media-src ''self'' https: data: http://localhost:3000; frame-src ''self''
+        https:; manifest-src ''self'' http://localhost:3000; connect-src ''self''
+        data: blob: http://localhost:3000 http://localhost:3000 ws://localhost:4000
+        ws://localhost:3035 http://localhost:3035; script-src ''self'' ''unsafe-inline''
+        ''unsafe-eval'' http://localhost:3000; child-src ''self'' blob: http://localhost:3000;
+        worker-src ''self'' blob: http://localhost:3000'
+      Content-Type:
+      - application/json; charset=utf-8
+      ETag:
+      - W/"38e63cb43c9359834b66f41070c8c079"
+      Referrer-Policy:
+      - strict-origin-when-cross-origin
+      Transfer-Encoding:
+      - chunked
+      Vary:
+      - Accept, Origin
+      X-Content-Type-Options:
+      - nosniff
+      X-Download-Options:
+      - noopen
+      X-Frame-Options:
+      - SAMEORIGIN
+      X-Permitted-Cross-Domain-Policies:
+      - none
+      X-Request-Id:
+      - 772bdf24-12ae-4d4b-b4a1-ae3cd452e247
+      X-Runtime:
+      - '0.010063'
+      X-XSS-Protection:
+      - 1; mode=block
+    status:
+      code: 200
+      message: OK
+version: 1
diff --git a/tests/test_account.py b/tests/test_account.py
index 700433f..6f3b9a5 100644
--- a/tests/test_account.py
+++ b/tests/test_account.py
@@ -280,3 +280,14 @@ def test_follow_with_notify_reblog(api, api2, api3):
         api.account_unfollow(api2_id)
         api3.status_delete(status1)
         api2.status_delete(status2)
+
+@pytest.mark.vcr()
+def test_account_lookup(api, api3):
+    id = api.me().id
+    try:
+        api.account_lookup("kljadklajsdkljlkjlkjlkjasdasd")
+        assert False
+    except:
+        pass
+    assert(api.account_lookup("mastodonpy_test").id == id)
+    assert(api.account_lookup("mastodonpy_test@localhost:3000").id == id)
\ No newline at end of file