Cognomen 田谷 (Taya 
, Тая 
, 田谷 
) , worldwide, is a common surname. The cognomen 田谷 is habitual in Mauritania, where it is quite a common surname, Peru, where it is quite a rare surname, and India. Not in comparison with a country's population, it is the most numerous in India, Egypt, and Peru. Also, 田谷 is the forename as well as the last name.