diff --git a/README.rst b/README.rst
index cbdfdfc6..4302e457 100644
--- a/README.rst
+++ b/README.rst
@@ -194,7 +194,7 @@ OAuth
 -----
 
 *gallery-dl* supports user authentication via OAuth_ for
-``deviantart``, ``flickr``, ``reddit`` and ``tumblr``.
+``deviantart``, ``flickr``, ``reddit``, ``smugmug`` and ``tumblr``.
 This is entirely optional, but grants *gallery-dl* the ability
 to issue requests on your account's behalf and enables it to access resources
 which would otherwise be unavailable to a public user.
diff --git a/docs/supportedsites.rst b/docs/supportedsites.rst
index 3a7a8fcf..da6b774a 100644
--- a/docs/supportedsites.rst
+++ b/docs/supportedsites.rst
@@ -68,7 +68,7 @@ Sea Otter Scans      https://reader.seaotterscans.com/   Chapters, Manga
 Sen Manga            http://raw.senmanga.com/            Chapters
 Sense-Scans          http://sensescans.com/              Chapters, Manga
 SlideShare           https://www.slideshare.net/         Presentations
-SmugMug              https://www.smugmug.com/            |Albums, individ-5|
+SmugMug              https://www.smugmug.com/            |Albums, individ-5|                                Optional (OAuth)
 Subapics             https://subapics.com/               Chapters, Manga
 The /b/ Archive      https://thebarchive.com/            Threads
 Tumblr               https://www.tumblr.com/             Images from Users, Likes, Posts, Tag-Searches      Optional (OAuth)
diff --git a/gallery_dl/extractor/oauth.py b/gallery_dl/extractor/oauth.py
index 6d8a1c7a..7c682541 100644
--- a/gallery_dl/extractor/oauth.py
+++ b/gallery_dl/extractor/oauth.py
@@ -9,7 +9,7 @@
 """Utility classes to setup OAuth and link a users account to gallery-dl"""
 
 from .common import Extractor, Message
-from . import deviantart, flickr, reddit, tumblr
+from . import deviantart, flickr, reddit, smugmug, tumblr
 from .. import text, oauth, config
 import os
 import urllib.parse
@@ -212,6 +212,27 @@ class OAuthReddit(OAuthBase):
         )
 
 
+class OAuthSmugmug(OAuthBase):
+    subcategory = "smugmug"
+    pattern = ["oauth:smugmug$"]
+
+    def __init__(self, match):
+        OAuthBase.__init__(self, match)
+        self.session = oauth.OAuth1Session(
+            self.oauth_config("api-key", smugmug.SmugmugAPI.API_KEY),
+            self.oauth_config("api-secret", smugmug.SmugmugAPI.API_SECRET),
+        )
+
+    def items(self):
+        yield Message.Version, 1
+
+        self._oauth1_authorization_flow(
+            "https://api.smugmug.com/services/oauth/1.0a/getRequestToken",
+            "https://api.smugmug.com/services/oauth/1.0a/authorize",
+            "https://api.smugmug.com/services/oauth/1.0a/getAccessToken",
+        )
+
+
 class OAuthTumblr(OAuthBase):
     subcategory = "tumblr"
     pattern = ["oauth:tumblr$"]
diff --git a/scripts/build_supportedsites.py b/scripts/build_supportedsites.py
index db12075d..16567b63 100755
--- a/scripts/build_supportedsites.py
+++ b/scripts/build_supportedsites.py
@@ -87,6 +87,7 @@ AUTH_MAP = {
     "reddit"     : "Optional (OAuth)",
     "sankaku"    : "Optional",
     "seiga"      : "Required",
+    "smugmug"    : "Optional (OAuth)",
     "tumblr"     : "Optional (OAuth)",
 }