In the entire world, Caou (Caou 
) is an extremely rare unknown gender first name. Much more prevalently, Caou is the last name as well as the forename.
Mr, Matheus, Alberto, Amabili, Geraldo, Elenice, Estevao, Ernesta, Hilario, Fellipe, Iracema, Alderico, Pollyana, Reinaldo, Josilene, Everaldo, Fernando, Aristides, Ignace, Ivanil, Israel, Edemir, Ms, Ana, Cida, Lair, Luiz, Jose, Maria, Marta, Catharina, Mauro, Alair, Karol, Luiza, Edson, Helia, Amanda, Camila, Renata, Sarah, and Jaqueline