Surname Siwr (Sur 
, Sure , Siwr) , all over the world, is a widespread cognomen. The surname Siwr is habitual in Oman, where it is quite a common surname, Iraq, where it is quite a rare surname, and India. Not in comparison with a country's population, the name is most common in India, Bangladesh, and Indonesia. Much less frequently, Siwr is the forename as well as the last name.