Family name Onam (Onam 
, 오남 
) , around the world, is quite a rare surname. The cognomen Onam is characteristic of Kenya, where it is quite a rare surname, Honduras, where it is a rare surname, and Nigeria, where it is a very rare surname. In absolute terms, the name is most common in Kenya, India, and Nigeria. Likewise, Onam is the forename as well as the last name.