Last name Silili (Silili 
) , around the world, is a rare surname. The surname Silili is characteristic of Tanzania, where it is a rare surname, South Africa, where it is a very rare surname, and Brazil, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Tanzania, South Africa, and India. Much less frequently, Silili is the forename as well as the last name.