The Prodigal Son (Chinese: 敗家仔) is a 1981 Hong Kong martial arts film directed by Sammo Hung and co-written with Barry Wong.

The film tells the story of Leung Chang, the son of a wealthy man who is half-heartedly studying kung fu.

After Leung Chang discovers that his father has been deceiving him, he becomes inspired to study martial arts more seriously and attempts to convince a kung fu expert to take him on as a student.

He has fought over three hundred times in Foshan and won every fight, but unbeknownst to him, his father has arranged for his servant Yee Tung-choi to bribe Chang's opponents to lose to him in order to protect him.

One night, three of Chang's friends attend a performance by the Lok Fung Lin Chinese Opera troupe.

Chang, desiring to learn real kung fu, asks Yee-tai to teach him Wing Chun.

There, Yee-tai's Wing Chun skills are witnessed by Lord Ngai Fei, the son of a Manchu duke, who is also a martial arts master and is hunting for a worthy opponent.

It is revealed that Ngai is also a "prodigal son"; unbeknownst to him, his father has ordered his bodyguards to protect him from anyone who might beat him in a fight.

Yee-tai is having trouble sleeping because of his asthma, and he sees light reflected off an assassin's blade through his eyelids and reacts in time to escape along with Chang.

In The Prodigal Son the depth and framing of the shots were a radical change from the two-dimensional approach to filming that had been used in Hong Kong at this point.