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Surname Guppy (Gubbi , Guppy , 古比) , in the world, is quite a common cognomen. The last name Guppy is characteristic of Trinidad and Tobago, where it is quite a rare surname, Australia, and the United Kingdom. Measured by absolute frequency, this name is the most popular in India, the United Kingdom, and Australia. Much less frequently, Guppy is the forename as well as the last name.