Family name Fats (Fats 
) , across the world, is a rare last name. The surname Fats is habitual in Trinidad and Tobago, where it is quite a rare surname, South Africa, where it is a very rare surname, and Australia. Measured by absolute frequency, it is the most numerous in China, Trinidad and Tobago, and South Africa. Also, Fats is the forename as well as the last name.