Worldwide, Kaidu (海都 
, Kaidu 
, Хайду 
) is a rare mostly boy's, but seldom female given name. The first name Kaidu is characteristic of Tanzania, where it is a very rare boy's name, China, where it is a very rare largely male, but uncommonly female name, and India, where it is an extremely rare dominantly boy's, but seldom feminine name. Very seldom, Kaidu is the last name as well as the forename.