Last name 润基 (Runji 
, 润基 ) , around the world, is a rare surname. The family name 润基 is characteristic of Sub-Saharan Africa, particularly Kenya, where it is a rare surname, Tanzania, and Nigeria, where it is an extremely rare surname. In absolute terms, it most frequently occurs in Kenya, Tanzania, and China. Also, 润基 is the forename as well as the last name.