Worldwide, סימאו (Simão 
, סימאו 
) is quite a rare boy's forename. The forename סימאו is habitual in Portugal, where it is quite a common boy's name, Angola, where it is quite a rare boy's name, and Morocco, where it is a very rare male name. Measured by absolute frequency, this name is the most popular in Angola, Portugal, and Brazil. Also, סימאו is the last name as well as the forename.