Cognomen טרו (True 
, Tero 
, טרו 
) , in all the world, is a common family name. The cognomen טרו is characteristic of Philippines, where it is quite a rare surname, Finland, and Estonia. Not in comparison with a country's population, it is the most numerous in Philippines, the United States, and Nigeria. Likewise, טרו is the forename as well as the last name.