Last name 科廷 (Kotin 
, 科廷 
, Curtin 
) , all over the world, is a common cognomen. The surname 科廷 is habitual in Ireland, where it is quite a common surname, Australia, where it is quite a rare surname, and New Zealand. Measured by absolute frequency, it is the most numerous in the United States, Ireland, and India. Very seldom, 科廷 is the forename as well as the last name.