Surname 希曦 (Xixi 
, 希曦 ) , globally, is quite a rare cognomen. The surname 希曦 is characteristic of Albania, where it is quite a rare surname, Malaysia, where it is a rare surname, and Tunisia. Measured by absolute frequency, it is commonest in China, Malaysia, and Indonesia. More prevalently, 希曦 is the forename as well as the last name.