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Family name Nonis (Nonis , Нонис ) , all over the world, is quite a common last name. The cognomen Nonis is characteristic of Sri Lanka, where it is quite a common surname, Singapore, where it is quite a rare surname, and Cyprus. In absolute terms, this name is the most popular in Sri Lanka, Malaysia, and Brazil. Very seldom, Nonis is the forename as well as the last name.