diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 7dc0dd871a8..0c43a14b9e7 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -1392,6 +1392,8 @@ class Form
 	 *	Return HTML code of the SELECT of list of all contacts (for a third party or all).
 	 *  This also set the number of contacts found into $this->num
 	 *
+	 * @since 9.0 Add afterSelectContactOptions hook
+	 *
 	 *	@param	int			$socid      	Id ot third party or 0 for all or -1 for empty list
 	 *	@param  array|int	$selected   	Array of ID of pre-selected contact id
 	 *	@param  string		$htmlname  	    Name of HTML field ('none' for a not editable field)
@@ -1411,7 +1413,7 @@ class Form
 	 */
 	function selectcontacts($socid, $selected='', $htmlname='contactid', $showempty=0, $exclude='', $limitto='', $showfunction=0, $moreclass='', $options_only=false, $showsoc=0, $forcecombo=0, $events=array(), $moreparam='', $htmlid='', $multiple=false)
 	{
-		global $conf,$langs;
+		global $conf,$langs,$hookmanager,$action;
 
 		$langs->load('companies');
 
@@ -1419,9 +1421,15 @@ class Form
 
 		if ($selected === '') $selected = array();
 		else if (!is_array($selected)) $selected = array($selected);
-        $out='';
+		$out='';
 
-		// On recherche les societes
+		if (! is_object($hookmanager))
+		{
+			include_once DOL_DOCUMENT_ROOT.'/core/class/hookmanager.class.php';
+			$hookmanager=new HookManager($this->db);
+		}
+
+		// We search third parties
 		$sql = "SELECT sp.rowid, sp.lastname, sp.statut, sp.firstname, sp.poste";
 		if ($showsoc > 0) $sql.= " , s.nom as company";
 		$sql.= " FROM ".MAIN_DB_PREFIX ."socpeople as sp";
@@ -1506,6 +1514,18 @@ class Form
 				$out.= ($socid != -1) ? ($langs->trans($socid?"NoContactDefinedForThirdParty":"NoContactDefined")) : $langs->trans('SelectAThirdPartyFirst');
 				$out.= '</option>';
 			}
+
+			$parameters = array(
+				'socid'=>$socid,
+				'htmlname'=>$htmlname,
+				'resql'=>$resql,
+				'out'=>&$out,
+				'showfunction'=>$showfunction,
+				'showsoc'=>$showsoc,
+			);
+
+			$reshook = $hookmanager->executeHooks( 'afterSelectContactOptions', $parameters, $this, $action );    // Note that $action and $object may have been modified by some hooks
+
 			if ($htmlname != 'none' || $options_only)
 			{
 				$out.= '</select>';