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Family name Tatis (Tatis ) , all around the world, is quite a common last name. The last name Tatis is characteristic of Latin America and the Caribbean, particularly the Dominican Republic, where it is quite a common surname, Colombia, where it is quite a rare surname, and Panama. Not in comparison with a country's population, the name is most common in Colombia, the Dominican Republic, and the United States. Likewise, Tatis is the forename as well as the last name.