Last name 夏雨 (夏雨 
, Xiayu 
) , worldwide, is a rare surname. The cognomen 夏雨 is habitual in Malaysia, where it is a rare surname, China, where it is a very rare surname, and Chile, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in China, Malaysia, and Mexico. More prevalently, 夏雨 is the forename as well as the last name.