Family name บุญแสง (บุญแสง 
, Boonsang 
, Boonsaeng 
) , globally, is quite a rare last name. The surname บุญแสง is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname, Philippines, where it is a very rare surname, and Singapore. Measured by absolute frequency, it is the most numerous in South-eastern Asia, particularly Thailand, Philippines, and Myanmar. Much less frequently, บุญแสง is the forename as well as the last name.