All around the world, Sizikov (Сизиков , Sizikov , סיזיקוב ) is an extremely rare unknown gender forename. Much more frequently, Sizikov is the last name as well as the forename.
Сизіков, Сізиков, and Сізіков
Mr, Aleksandr, Alexander, Vladimir, Alexandr, Nikolay, Gregory, Mikhail, Michael, Vasily, Evgeny, Nikita, Leonid, Dmitry, Andrey, Alexey, Sergey, Mihail, Denis, Pavel, Artem, Anton, Maxim, Igor, Oleksandr, and Konstantin
, Sizikov 
, סיזיקוב 
) is an extremely rare unknown gender forename. Much more frequently, Sizikov is the last name as well as the forename.