Cognomen ओमा (Ouma 
, ओमा) , worldwide, is a common last name. The family name ओमा is characteristic of Kenya, where it is a common surname, Tunisia, where it is quite a common surname, and Morocco, where it is quite a rare surname. Not in comparison with a country's population, it is commonest in Kenya, Morocco, and Uganda. Very seldom, ओमा is the forename as well as the last name.