In all the world, Сиднина (Сиднина ) is an extremely rare unknown gender forename. Much more prevalently, Сиднина is the last name as well as the forename.
Sidnina
Анна, Валентина, Анастасия, Светлана, Виктория, Вероника, Татьяна, Людмила, Наталья, Тамара, Сабина, Ектерина, Екатерина, Оксана, Лариса, Галина, Карина, Софья, Елена, Ирина, Ольга, Дарья, Мария, Вера, Нина, Любовь, and Александра
) is an extremely rare unknown gender forename. Much more prevalently, Сиднина is the last name as well as the forename.