diff --git a/app/assets/javascripts/behaviors/copy_as_gfm.js b/app/assets/javascripts/behaviors/copy_as_gfm.js
index c6eca72c51b..ffe90595b5d 100644
--- a/app/assets/javascripts/behaviors/copy_as_gfm.js
+++ b/app/assets/javascripts/behaviors/copy_as_gfm.js
@@ -299,6 +299,13 @@ const gfmRules = {
 
 export class CopyAsGFM {
   constructor() {
+    // iOS currently does not support clipboardData.setData(). This bug should
+    // be fixed in iOS 12, but for now we'll disable this for all iOS browsers
+    // ref: https://trac.webkit.org/changeset/222228/webkit
+    const userAgent = (typeof navigator !== 'undefined' && navigator.userAgent) || '';
+    const isIOS = /\b(iPad|iPhone|iPod)(?=;)/.test(userAgent);
+    if (isIOS) return;
+
     $(document).on('copy', '.md, .wiki', (e) => { CopyAsGFM.copyAsGFM(e, CopyAsGFM.transformGFMSelection); });
     $(document).on('copy', 'pre.code.highlight, .diff-content .line_content', (e) => { CopyAsGFM.copyAsGFM(e, CopyAsGFM.transformCodeSelection); });
     $(document).on('paste', '.js-gfm-input', CopyAsGFM.pasteGFM);
diff --git a/changelogs/unreleased/32546-cannot-copy-paste-on-ios.yml b/changelogs/unreleased/32546-cannot-copy-paste-on-ios.yml
new file mode 100644
index 00000000000..f4c44983736
--- /dev/null
+++ b/changelogs/unreleased/32546-cannot-copy-paste-on-ios.yml
@@ -0,0 +1,5 @@
+---
+title: Fix copy/paste on iOS devices due to a bug in webkit
+merge_request: 15804
+author:
+type: fixed