diff --git a/plugins/calendar/calendar_ui.js b/plugins/calendar/calendar_ui.js
--- a/plugins/calendar/calendar_ui.js
+++ b/plugins/calendar/calendar_ui.js
@@ -3154,6 +3154,18 @@
       }
     };
 
+    // display the edit dialog, request 'new' action and pass the selected event
+    this.event_copy = function(event) {
+        if (event && event.id) {
+            var copy = $.extend(true, {}, event);
+            delete copy.id;
+            delete copy._id;
+            delete copy.created;
+            delete copy.changed;
+            event_edit_dialog('new', copy);
+        }
+    };
+
     // show URL of the given calendar in a dialog box
     this.showurl = function(calendar)
     {
@@ -4234,6 +4246,7 @@
   rcmail.register_command('calendar-showurl', function(){ cal.showurl(cal.calendars[cal.selected_calendar]); }, false);
   rcmail.register_command('event-download', function(){ cal.event_download(cal.selected_event); }, true);
   rcmail.register_command('event-sendbymail', function(p, obj, e){ cal.event_sendbymail(cal.selected_event, e); }, true);
+  rcmail.register_command('event-copy', function(){ cal.event_copy(cal.selected_event); }, true);
   rcmail.register_command('event-history', function(p, obj, e){ cal.event_history_dialog(cal.selected_event); }, false);
 
   // search and export events
diff --git a/plugins/calendar/skins/classic/templates/calendar.html b/plugins/calendar/skins/classic/templates/calendar.html
--- a/plugins/calendar/skins/classic/templates/calendar.html
+++ b/plugins/calendar/skins/classic/templates/calendar.html
@@ -122,6 +122,7 @@
   <ul>
     <li><roundcube:button command="event-download" label="download" classAct="active" /></li>
     <li><roundcube:button command="event-sendbymail" label="send" classAct="active" /></li>
+    <li><roundcube:button command="event-copy" label="copy" classAct="active" /></li>
   </ul>
 </div>
 
diff --git a/plugins/calendar/skins/larry/templates/calendar.html b/plugins/calendar/skins/larry/templates/calendar.html
--- a/plugins/calendar/skins/larry/templates/calendar.html
+++ b/plugins/calendar/skins/larry/templates/calendar.html
@@ -163,6 +163,7 @@
 	<ul id="eventoptionsmenu-menu" class="toolbarmenu" role="menu" aria-labelledby="aria-label-eventoptions">
 		<li role="menuitem"><roundcube:button command="event-download" label="download" classAct="active" /></li>
 		<li role="menuitem"><roundcube:button command="event-sendbymail" label="send" classAct="active" /></li>
+		<li role="menuitem"><roundcube:button command="event-copy" label="copy" classAct="active" /></li>
 		<roundcube:if condition="env:calendar_driver == 'kolab' && config:kolab_bonnie_api" />
 		<li role="menuitem"><roundcube:button command="event-history" type="link" label="calendar.eventhistory" classAct="active" /></li>
 		<roundcube:endif />