In all the world, Koscak (Koscak , Кощак ) is an extremely rare unknown gender first name. Much more frequently, Koscak is the last name as well as the forename.
Koçcak, Košćak, and Koščak
Mr, Dado, Luis, Luka, Jose, John, Joao, June, Jure, Judi, Tony, Nair, Nino, Edna, Eric, Vera, Ivan, Igor, Yuko, Ygor, Ryan, Maria, Rudy, Paul, Ms, Tj, Ana, Bob, Jan, Jim, Tom, Ian, Mary, Mark, Matt, Sara, Ales, Anna, Adam, Chad, Cara, Beau, Blaz, Ruth, and Marie
, Кощак 
) is an extremely rare unknown gender first name. Much more frequently, Koscak is the last name as well as the forename.