Throughout the world, Марцис (Marcis 
, Mārcis , Марцис 
) is a rare predominantly boy's, but very seldom female forename. The given name Марцис is characteristic of Latvia, where it is quite a common boy's name, Puerto Rico, where it is quite a rare boy's name, and Nicaragua, where it is a rare unisex name. Not in comparison with a country's population, this name is the most popular in Latvia, Puerto Rico, and Philippines. Likewise, Марцис is the last name as well as the forename.