Family name Mausi (Mouse 
, Mausi 
) , worldwide, is quite a rare last name. The family name Mausi is habitual in Djibouti, where it is quite a common surname, Somalia, where it is quite a rare surname, and Taiwan. Measured by absolute frequency, this name is the most popular in Nigeria, Indonesia, and the United States. Also, Mausi is the forename as well as the last name.