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Across the world, 牛顿 (Newton , 牛顿 ) is a common boy's forename. The first name 牛顿 is habitual in Brazil, where it is quite a common masculine name, Guinea-Bissau, where it is quite a rare boy's name, and Barbados. In absolute terms, this name is the most popular in Brazil, Bangladesh, and India. Also, 牛顿 is the last name as well as the forename.
牛顿 is also a name for the fictitious and mythical characters: Newt Scamander , the wizard in the Harry Potter universe, Fantastic Beasts and Where to Find Them and Newton Gearloose , the nephew of Gyro Gearloose.