Globally, Smiech (Smiech 
) is an extremely rare unknown gender forename. Very seldom, Smiech is the last name as well as the forename.
Jan, Barbara, Ryszard, Grazyna, Jadwiga, Jolanta, Tadeusz, Wieslaw, Wioleta, Marianna, Miroslaw, Slawomir, Krystyna, Elzbieta, Ireneusz, Wojciech, Stanislaw, Katarzyna, Kazimierz, Krzysztof, Wladyslaw, Malgorzata, Czeslaw, Andrzej, Helena, Halina, Ewa, Anna, Adam, Jzef, Maria, Marta, Marek, Alina, Beata, Piotr, Stanislawa, Roman, Irena, Iwona, Zofia, Marian, Antoni, Danuta, Janina, Janusz, Tomasz, Teresa, Jerzy, and Franciszek