Beh has not announced where she intends to go. She said that she was still "weighing up her options".
Beh's departure comes amid speculation that DraftFCB will be merged with Interface, its sister agency in the region, under the DraftFCB banner. The new entity is expected to be headed up by the Interface managing director, T Renganathan.
Earlier this year, DraftFCB Malaysia lost the Fonterra business,which was its biggest account.