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Last name Sinon (Sinon , ซีนอน , Si Non) , all over the world, is quite a rare surname. The last name Sinon is habitual in Seychelles, where it is a common surname, Burkina Faso, where it is quite a rare surname, and Philippines. Not in comparison with a country's population, it is the most numerous in Philippines, Burkina Faso, and the United States. Much less frequently, Sinon is the forename as well as the last name.