Worldwide, Lasiak (Lasiak , Ласяк ) is an extremely rare unknown gender first name. Likewise, Lasiak is the last name as well as the forename.
Łasiak, Łąsiak, and Ласиак
Jzef, and Wladyslaw
, Ласяк 
) is an extremely rare unknown gender first name. Likewise, Lasiak is the last name as well as the forename.