Johnny Yim Lai-hang (born 12 August 1977) is a Hong Kong pianist, composer, arranger, and producer.
Yim was born in Hong Kong, coming from a family with a musical background, with one parent a musician and the other a dance choreographer. He has a sister named Alice. Yim's journey in music began at the age of six when he started learning the piano. While growing up in Canada, he pursued a major in Mathematics at York University and didn't consider a formal music degree due to concerns about making a living. However, his passion for music remained strong, leading him to embark on a self-study path. Upon returning to Hong Kong, Yim achieved his first milestone by winning the 16th C.A.S.H. Songwriting Quest in 2004, which served as a catalyst for his music career. Since then, Yim has worked with numerous artists, including Alan Tam, Hins Cheung, Gigi Leung, Hacken Lee, AGA, Joyce Cheng, Alfred Hui. In 2017, Yim founded the Gsus Music Ministry, an initiative dedicated to promoting Cantonese Christian music.
In 2021, Yim took on the role of music director for TVB's singing competition Stars Academy (2021âÂÂ2022). Throughout his career, he has crafted over hundreds of arranged pieces, earning him the moniker of "Arrangement Knight" ().