Surname จ๋าย (Chai 
, Jjai 
, จ๋าย) , worldwide, is a widespread last name. The last name จ๋าย is characteristic of Malaysia, where it is a common surname, British Virgin Islands, and Singapore (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in China, Malaysia, and Indonesia. Much less frequently, จ๋าย is the forename as well as the last name.