Last name Unanan (Unanan 
, อุณานันท์ , อุนานันท์ ) , in the entire world, is a rare family name. The last name Unanan is characteristic of Thailand, where it is a rare surname, Nigeria, where it is an extremely rare surname, and China. In absolute terms, it is the most numerous in Thailand, China, and India. Also, Unanan is the forename as well as the last name.