Family name Masimo (Masimo 
, Масимо 
, ماسيمو) , throughout the world, is quite a rare cognomen. The cognomen Masimo is habitual in Sub-Saharan Africa, particularly Botswana, where it is quite a rare surname, Zimbabwe, and Tanzania, where it is a rare surname. In absolute terms, the name is most common in Sub-Saharan Africa, particularly Tanzania, Ethiopia, and Zimbabwe. Likewise, Masimo is the forename as well as the last name.