All over the world, Sidun (斯顿 
, Sidun 
, Сидун 
) is a rare gender-neutral forename. The first name Sidun is habitual in China, where it is a very rare dominantly male, but seldom girly name, Indonesia, where it is a very rare male name, and India, where it is an extremely rare dominantly feminine, but seldom masculine name. Very seldom, Sidun is the last name as well as the forename.