Andy Hui Chi-On (born 12 August 1967) is a Hong Kong singer and film actor. Hui was the First Runner-up in the fifth Annual New Talent Singing Awards in 1986. Hui has appeared in about 25 films.
Hui is considered one of the most successful Chinese music celebrities, with an extensive list of Cantonese and Mandarin hits to his credit. His first music contract came in 1986, and his singing career reached stellar status in 2001 as he won awards of the most favourite male singer.
In 2004, Hui was named by Alan Tam as one of the 'New Four Heavenly Kings' along with Hacken Lee, Leo Ku, and Edmond Leung which would be replacing the once lustrous title awarded to Jacky Cheung, Andy Lau, Aaron Kwok, and Leon Lai.
In October 2005, Andy was declared one of Ten Outstanding Young Persons where his hard work on his music and film career, and his excellence in commitment to the community was recognised.
Hui married his long-term collaborator Sammi Cheng in 2013.