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Worldwide, សិរ (Sira , សិរ ) is a common gender-neutral forename. The given name សិរ is characteristic of Sub-Saharan Africa, particularly Ethiopia, where it is quite a rare dominantly girly, but uncommonly boy's name, Gambia, where it is quite a rare girly name, and Senegal, where it is quite a rare unisex name. In absolute terms, this name is the most popular in India, Ethiopia, and the Democratic Republic of the Congo. Likewise, សិរ is the last name as well as the forename.
សិរ is also a name for the fictitious and mythical characters: Sira , the operatic character in the opera Das unterbrochene Opferfest.