Globally, Pyanikov (Pyanikov , Пьяников ) is an extremely rare unknown gender first name. Much more prevalently, Pyanikov is the last name as well as the forename.
Пъяников, Пьяніков, Пяников, and Пяніков
Dmitry
, Пьяников 
) is an extremely rare unknown gender first name. Much more prevalently, Pyanikov is the last name as well as the forename.