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Surname Simchi (Simchi , שמחי ) , globally, is a rare cognomen. The surname Simchi is characteristic of Israel, where it is quite a common surname, Iran, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, the name is most common in Israel, Iran, and the United States. Likewise, Simchi is the forename as well as the last name.