All About Ah-Long (Chinese: 阿郎的故事, Taiwan title:又見阿郎) is a 1990 Hong Kong family drama film directed by Johnnie To and starring Chow Yun-fat and Sylvia Chang, who also serve as the film's storywriters.

Chow Yun-fat plays Ah-Long, a single father trying to raise his son, Porky (Huang Kun-Hsuen), on a low-income as a truckdriver at a construction site.

The son's mother, Por-por, Ah-Long's ex-girlfriend (played by Sylvia Chang) left him ten years ago for the United States after a lovers' spat.

As Por-por was giving birth in the hospital, Ah-Long was involved in illegal racing and was put behind bars.

Por-por reveals that she wants to bring Porky back to the United States, shattering Ah-Long's dreams.

Ah-Long decides to try his luck at motorbike racing, which he did before, resulting in steel rods in his legs.

All About Ah-Long was a critical and box office hit in Hong Kong, due to Chow Yun-fat's rise to popularity as an actor at the time.

The drama-based film is generally hailed as one of Johnnie To's masterpieces due to its strong storyline and the excellent portrayal of the characters.