Family name Onouma (Onouma 
) , around the world, is an extremely rare cognomen. The cognomen Onouma is characteristic of Sub-Saharan Africa, particularly Nigeria, where it is an extremely rare surname. Much more frequently, Onouma is the forename as well as the last name.
Kasa, Songsang, Chaitham, Chimmusik, Karakorn, Rakmueang, Lertkrai, Thong Om, Tuntarawongsa, Nisaidee, Viseatkaew, Sreesuwan, Khawphuak, Prakratam, Promsanit, Phavongxay, Jittramas, Thummapol, Chuaynakorn, Thaniphong, Chanasongcram, Prathummanee, Suksawat, Udomsub, Rongjik, Romkaeo, Mikeao, Mutkhuntod, Saeouy, Sugree, Kongin, Raknim, Rachdrem, Romyen, Wongsa, Meewong, Sriboonruang, Suethao, Chusang, Boonmee, Kamwang, Kaewoun, Pangsri, Paxasoux, Pommasa, Plaidad, Plumjite, Rakmeuang, Somphod, and Watcharachalerm