diff --git a/config/locales/server.en.yml b/config/locales/server.en.yml
index ffce1246243..f41152fcbe4 100644
--- a/config/locales/server.en.yml
+++ b/config/locales/server.en.yml
@@ -2786,7 +2786,7 @@ en:
         <tr><td><code>status:open</code></td><td><code>status:closed</code></td><td><code>status:archived</code></td><td><code>status:noreplies</code></td><td><code>status:single_user</code></td></tr>
         <tr><td><code>#category-slug</code></td><td><code>category:foo</code></td><td><code>group:foo</code></td><td><code>badge:foo</code></td><td></td></tr>
         <tr><td><code>in:likes</code></td><td><code>in:posted</code></td><td><code>in:watching</code></td><td><code>in:tracking</code></td><td><code>in:private</code></td></tr>
-        <tr><td><code>in:bookmarks</code></td><td><code>in:first</code></td><td><code>in:pinned</code></td><td><code>in:unpinned</code></td><td></td></tr>
+        <tr><td><code>in:bookmarks</code></td><td><code>in:first</code></td><td><code>in:pinned</code></td><td><code>in:unpinned</code></td><td><code>in:wiki</code></td></tr>
         <tr><td><code>posts_count:num</code></td><td><code>before:days or date</code></td><td><code>after:days or date</code></td> <td colspan=2></td></tr>
         </table>
       </p>
diff --git a/lib/search.rb b/lib/search.rb
index c4bb98ca6db..22cb3f79c0c 100644
--- a/lib/search.rb
+++ b/lib/search.rb
@@ -231,6 +231,10 @@ class Search
     end
   end
 
+  advanced_filter(/in:wiki/) do |posts,match|
+    posts.where(wiki: true)
+  end
+
   advanced_filter(/badge:(.*)/) do |posts,match|
     badge_id = Badge.where('name ilike ? OR id = ?', match, match.to_i).pluck(:id).first
     if badge_id
diff --git a/spec/components/search_spec.rb b/spec/components/search_spec.rb
index f3ee6f1561d..8d14de9411d 100644
--- a/spec/components/search_spec.rb
+++ b/spec/components/search_spec.rb
@@ -426,6 +426,13 @@ describe Search do
       expect(Search.execute('boom in:unpinned', guardian: guardian).posts.length).to eq(1)
     end
 
+    it 'supports wiki' do
+      topic = Fabricate(:topic)
+      wiki_post = Fabricate(:post, raw: 'this is a test 248', wiki: true, topic: topic)
+
+      expect(Search.execute('test 248 in:wiki').posts.length).to eq(1)
+    end
+
     it 'supports before and after, in:first, user:, @username' do
 
       time = Time.zone.parse('2001-05-20 2:55')