diff --git a/l10n/cy_GB.js b/l10n/cy_GB.js
new file mode 100644
index 000000000..2a72f5761
--- /dev/null
+++ b/l10n/cy_GB.js
@@ -0,0 +1,12 @@
+OC.L10N.register(
+    "firstrunwizard",
+    {
+    "Copied!" : "Wedi'i gopïo!",
+    "Not supported!" : "Heb ei gefnogi!",
+    "Press ⌘-C to copy." : "Pwyswch ⌘-C i gopïo.",
+    "Press Ctrl-C to copy." : "Pwyswch Ctrl-C i gopïo.",
+    "About" : "Ynghylch",
+    "Server address" : "Cyfeiriad gweinydd",
+    "Copy link" : "Copïo dolen"
+},
+"nplurals=4; plural=(n==1) ? 0 : (n==2) ? 1 : (n != 8 && n != 11) ? 2 : 3;");
diff --git a/l10n/cy_GB.json b/l10n/cy_GB.json
new file mode 100644
index 000000000..df95453e0
--- /dev/null
+++ b/l10n/cy_GB.json
@@ -0,0 +1,10 @@
+{ "translations": {
+    "Copied!" : "Wedi'i gopïo!",
+    "Not supported!" : "Heb ei gefnogi!",
+    "Press ⌘-C to copy." : "Pwyswch ⌘-C i gopïo.",
+    "Press Ctrl-C to copy." : "Pwyswch Ctrl-C i gopïo.",
+    "About" : "Ynghylch",
+    "Server address" : "Cyfeiriad gweinydd",
+    "Copy link" : "Copïo dolen"
+},"pluralForm" :"nplurals=4; plural=(n==1) ? 0 : (n==2) ? 1 : (n != 8 && n != 11) ? 2 : 3;"
+}
\ No newline at end of file