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Family name Trotter (Trot , Trotter , Troti ) , around the world, is a common last name. The cognomen Trotter is habitual in Guam, where it is quite a common surname, Reunion, and New Zealand, where it is quite a rare surname. In absolute terms, this name is the most popular in the United States, the United Kingdom, and Australia. Much less frequently, Trotter is the forename as well as the last name.