Surname 西元 (Xiyuan 
, 西元 ) , globally, is a rare cognomen. The last name 西元 is habitual in China, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and Thailand. Measured by absolute frequency, it most frequently occurs in China, Malaysia, and the United States. Much more prevalently, 西元 is the forename as well as the last name.