Sammo Hung Kam-Bo ( ; Cantonese: Hung4 Gam1 Bou2) (born January 7, 1952, Hong Kong) is a Chinese actor, producer and director known for his work in many kung fu films and Hong Kong action cinema. He has been a fight choreographer for, amongst others, Bruce Lee, Jackie Chan, King Hu, Stephen Chow and John Woo.

Hung is one of the pivotal figures who, spearheaded the Hong Kong New Wave movement of the 1980s, helped reinvent the martial arts genre and started the Jiang Shi (hopping vampire) genre.

In East Asia, it is common for people to address their elders or influential people with familial nouns as a sign of familiarity and respect. Jackie Chan, for example, is often addressed as "Dai Goh", meaning Big Brother. Hung was known also known as "Dai Goh", until the filming of Project A, which featured both actors. As Hung was the eldest of the kung fu "brothers", and the first to make a mark on the industry, he was given the nickname "Dai Goh Dai", meaning, Big, Big Brother or Biggest Big Brother.

Born in Hong Kong, Sammo Hung's acting career began while he was training in acrobatics, martial arts and dance as a child at the China Drama Academy, and he received acclaim for his performance with a troupe called "The Seven Little Fortunes." He made his feature film debut as an actor at the age of 12, and has worked in numerous martial arts films as an actor, director, producer and/or choreographer, collaborating with Bruce Lee (I) and Jackie Chan (I), two superstars of the genre. He is now internationally renowned as a pioneer and trend-setter in Hong Kong action films. Hung's big break as a film actor came with a role as a villain in the Bruce Lee film Enter the Dragon (1973). He established his reputation as a skilled physical comedian in several kung-fu comedies, beginning with "Enter the Fat Dragon" (Fei Lung gwoh gong (1978)). He also produced and starred in numerous successful films throughout the 1970s and 1980s for Hong Kong's leading film studio, Golden Harvest. Hung collaborated in the 1980s with long-time friend Jackie Chan (I) in a highly successful series of action comedies that cemented Hung's reputation as a consummate actor/director and launched Chan's career as an international star. For a while, Hung also starred in an American TV series, "Martial Law" (1998). He directed "Once Upon a Time in China and America" (Wong Fei Hung: Chi sai wik hung shut (1997)), his first film shot in the US. He and his wife, Mina, now divide their time between homes in Hong Kong and Los Angeles.