Jack Ng Wai-lun (Chinese: 吳煒倫; born 1976) is a Hong Kong film director and screenwriter.

Starting his career as a screenwriter, Ng is best known for collaborating with Dante Lam in action thriller films.

He received four nominations for Best Screenplay in the 28th, 30th, 33rd, and 36th Hong Kong Film Awards for his contributions to Beast Stalker (2008), The Stool Pigeon (2010), Unbeatable (2013), and Cold War 2 (2016) respectively.

[1] Ng befriended Lam and went on to collaborate as a screenwriter in his subsequent projects Hit Team [zh] and Runaway in 2001.

[16] He then co-wrote Monster Hunt 2 with his fellow APA classmate Sunny Chan in 2018,[17] and contributed as a screenwriter for the biographical film Anita in 2021.