Surname 知洋 (Zhiyang 
, 知洋 ) , around the globe, is a rare last name. The last name 知洋 is characteristic of Singapore, where it is a rare surname, Malaysia, and Saudi Arabia, where it is a very rare surname. Measured by absolute frequency, the name is most common in China, Indonesia, and Malaysia. More prevalently, 知洋 is the forename as well as the last name.