Family name โอเปก (Opek 
, โอเปก 
) , around the globe, is a rare last name. The cognomen โอเปก is characteristic of Indonesia, where it is a rare surname, Poland, where it is a very rare surname, and Malaysia. In absolute terms, it is commonest in Indonesia, Poland, and Nigeria. Likewise, โอเปก is the forename as well as the last name.