diff --git a/README.md b/README.md
index ce0c1b4..c2fdcfb 100644
--- a/README.md
+++ b/README.md
@@ -92,6 +92,7 @@ Works on any mostly-static site with no per-site setup: news sites, blogs, docum
 | Stack Overflow | `oc so` (via Atom feeds and the Stack Exchange API) | `search <query>`, `question <id>`, `tag <name>`, `user <id>`, `recent` |
 | Yahoo Finance | `oc yahoo` | `quote <symbol>`, `news <symbol>`, `history <symbol>`, `lookup <query>`, `markets`, `gainers`, `losers`, `trending` |
 | YouTube | `oc yt` | `video <id>`, `channel <name>` |
+| Wikipedia | `oc wiki` (via `action=render`) | `article <title>`, `search <query>`, `lang <code> <title>` |
 | AWS docs | `oc aws` (search via DuckDuckGo) | `guide <service> <page>`, `page <service> <guide> <page>`, `cli <command>`, `search <query>` |
 | Google Cloud docs | `oc gcp` (via docs.cloud.google.com, search via DuckDuckGo) | `docs <product>`, `page <product> <page>`, `gcloud <command>`, `search <query>` |
 | Microsoft Learn | `oc learn` (search via its RSS API) | `azure <page>`, `doc <path>`, `cli <command>`, `search <query>` |
diff --git a/clis/wikipedia.org.json b/clis/wikipedia.org.json
new file mode 100644
index 0000000..8f9b64f
--- /dev/null
+++ b/clis/wikipedia.org.json
@@ -0,0 +1,8 @@
+{
+  "domain": "wikipedia.org",
+  "commands": {
+    "article": { "open": "https://en.wikipedia.org/w/index.php?title={title}&action=render", "args": ["title"] },
+    "search": { "open": "https://en.wikipedia.org/w/index.php?search={query}&fulltext=1&ns0=1", "args": ["query"] },
+    "lang": { "open": "https://{code}.wikipedia.org/w/index.php?title={title}&action=render", "args": ["code", "title"] }
+  }
+}
diff --git a/src/sites.js b/src/sites.js
index 575a835..eade056 100644
--- a/src/sites.js
+++ b/src/sites.js
@@ -24,6 +24,7 @@ const ALIASES = {
   aws: 'docs.aws.amazon.com',
   gcp: 'cloud.google.com',
   learn: 'learn.microsoft.com',
+  wiki: 'wikipedia.org',
 };
 
 /** @typedef {{open: string, args?: string[]}} Shortcut */