Family name Truo (Trou 
, Truo 
) , in all the world, is a rare cognomen. The last name Truo is habitual in France, where it is a rare surname, Algeria, and Greece, where it is a very rare surname. Not in comparison with a country's population, it is commonest in France, Algeria, and Morocco. Much less frequently, Truo is the forename as well as the last name.