Around the world, Rosby (Rosby 
) is a rare unisex first name. The given name Rosby is habitual in Guatemala, where it is a rare girly name, Philippines, where it is a rare gender-neutral name, and Bolivia, where it is a rare feminine name. In absolute terms, it most frequently occurs in Philippines, Mexico, and Guatemala. Also, Rosby is the last name as well as the forename.