Surname สีดา (Sida 
, สีดา 
, Sidae 
) , all around the world, is a common family name. The cognomen สีดา is habitual in Laos, where it is quite a common surname, Thailand, where it is quite a rare surname, and Czechia. In absolute terms, this name is the most popular in India, Thailand, and Ethiopia. Also, สีดา is the forename as well as the last name.