In the entire world, Białecki (Białecki 
) is an extremely rare unknown gender forename. Much more prevalently, Białecki is the last name as well as the forename.
Jan, Czarek, Bartek, Kacper, Konrad, Patryk, Robert, Daniel, Damian, Janusz, Tomasz, Henryk, Wiktor, Mariusz, Mateusz, Michał, Andrzej, Bartosz, Bogusław, Ryszard, Dariusz, Dominik, Adrian, Szymon, Maciek, Maciej, Arek, Adam, Kuba, Emil, Igor, Marek, Mirek, Artur, Karol, Kamil, Gabriel, Paweł, Radek, Rafał, Roman, Dawid, Jacek, Jasio, Jakub, Tomek, Filip, Marcin, Piotr, and Tadeusz