Cognomen 希达 (Siddharth 
, 希达 
) , all over the world, is quite a rare last name. The surname 希达 is characteristic of United Arab Emirates, where it is a rare surname, Singapore, and Kuwait. Not in comparison with a country's population, this name is the most popular in India, China, and Bangladesh. Much more frequently, 希达 is the forename as well as the last name.