Globally, Реньо (Regnault 
, Regnaud 
, Реньо 
) is a very rare mostly masculine, but infrequently female forename. The forename Реньо is characteristic of France, where it is a very rare unisex name, and Italy, where it is a very rare male name. Much more prevalently, Реньо is the last name as well as the forename.