diff --git a/addressbook/inc/class.addressbook_ui.inc.php b/addressbook/inc/class.addressbook_ui.inc.php
index 42e8424a8a..e795267d7b 100644
--- a/addressbook/inc/class.addressbook_ui.inc.php
+++ b/addressbook/inc/class.addressbook_ui.inc.php
@@ -587,7 +587,16 @@ class addressbook_ui extends addressbook_bo
 						'id' => 'writable',
 						'caption' => 'Share writable',
 						'checkbox' => true,
-					]] + $share2addressbooks,
+					]] + $share2addressbooks + [
+					'unshare' => [
+						'icon' => 'delete',
+						'caption' => 'Unshare',
+						'group' => $group,
+						'enableClass' => 'unshare_contact',
+						'hideOnDisabled' => true,
+						'hideOnMobile' => true
+					]
+				],
 				'prefix' => 'shared_with_',
 				'group' => $group,
 				'hideOnMobile' => true
@@ -1210,7 +1219,7 @@ class addressbook_ui extends addressbook_bo
 	{
 		//echo "<p>uicontacts::action('$action',".print_r($checked,true).','.(int)$use_all.",...)</p>\n";
 		$success = $failed = 0;
-		if ($use_all || in_array($action,array('remove_from_list','delete_list')))
+		if ($use_all || in_array($action,array('remove_from_list','delete_list','unshare')))
 		{
 			// get the whole selection
 			$query = is_array($session_name) ? $session_name : Api\Cache::getSession('addressbook', $session_name);
@@ -1467,6 +1476,30 @@ class addressbook_ui extends addressbook_bo
 					}
 					break;
 				case 'shared_with':
+					// as "unshare" is in "shared_with" submenu/children it uses "shared_with_unshare"
+					if ($shared_with === 'unshare')
+					{
+						$action_msg = lang('unshared');
+						if (($Ok = !!($contact = $this->read($id))))
+						{
+							$need_save = false;
+							foreach($contact['shared'] as $key => $shared)
+							{
+								// only unshare contacts shared by current user
+								if ($shared['shared_by'] == $this->user &&
+									// only unshare from given addressbook, or all
+									(empty($query['filter']) || $shared['shared_with'] == (int)$query['filter']))
+								{
+									$need_save = true;
+									unset($contact['shared'][$key]);
+								}
+							}
+							// we might need to ignore acl, as we are allowed to share with just read-rights
+							// setting user and update-time is explicitly desired for sync(-collection)!
+							$Ok = !$need_save || $this->save($contact, true);
+						}
+						break;
+					}
 					$action_msg = lang('shared into addressbook %1', Accounts::username($shared_with));
 					if (($Ok = !!($contact = $this->read($id))))
 					{
@@ -2025,6 +2058,11 @@ class addressbook_ui extends addressbook_bo
 			{
 				$row['cat_id'] = $this->categories->check_list(Acl::READ,$row['cat_id']);
 			}
+
+			if ($query['col_filter']['shared_by'] == $this->user)
+			{
+				$row['class'] .= 'unshare_contact ';
+			}
 		}
 		$rows['no_distribution_list'] = (bool)$query['filter2'];
 
diff --git a/addressbook/lang/egw_de.lang b/addressbook/lang/egw_de.lang
index 03b6e999d1..53724700f1 100644
--- a/addressbook/lang/egw_de.lang
+++ b/addressbook/lang/egw_de.lang
@@ -512,6 +512,8 @@ unable to import into %1, using %2	addressbook	de	Import nach %1 ist nicht mögl
 unique id (uid)	addressbook	de	Eindeutige ID (UID)
 unique id<br />(to update existing records)	addressbook	de	Eindeutige ID<br />(um existierende Datensätze zu aktualisieren)
 unknown type %1, imported as %2	addressbook	de	Unbekannter Typ %!, als %2 importiert
+unshare	addressbook	de	Nicht mehr teilen
+unshared	addressbook	de	nicht mehr geteilt
 update a single entry by passing the fields.	addressbook	de	Aktualisiert einen einzelnen Eintrag durch Übergabe seiner Felder.
 update fields by edited organisations?	admin	de	Welche Felder sollen beim Bearbeiten von Organisationen aktualisiert werden?
 updated	addressbook	de	Aktualisiert
diff --git a/addressbook/lang/egw_en.lang b/addressbook/lang/egw_en.lang
index 352019e46c..8b38d377ea 100644
--- a/addressbook/lang/egw_en.lang
+++ b/addressbook/lang/egw_en.lang
@@ -512,6 +512,8 @@ unable to import into %1, using %2	addressbook	en	Unable to import into %1, usin
 unique id (uid)	addressbook	en	Unique ID (UID)
 unique id<br />(to update existing records)	addressbook	en	Unique ID<br />to update existing records
 unknown type %1, imported as %2	addressbook	en	Unknown type %1, imported as %2
+unshare	addressbook	en	Unshare
+unshared	addressbook	en	unshared
 update a single entry by passing the fields.	addressbook	en	Update a single entry by passing the fields.
 update fields by edited organisations?	admin	en	Fields to update of edited organizations
 updated	addressbook	en	Updated