Kelvin Yu (born 1979) is an American actor and writer. Yu's first film was the 2003 comedy The Utopian Society.

He later made an uncredited appearance in the 2005 film Elizabethtown. The following year, Yu had a supporting role in the comedy Grandma's Boy. Yu played a role in the Ghost Whisperer episode "Double Exposure" (3x6) as Joseph.