Ali Lee Kai-sum (Chinese: 李佳芯; Jyutping: Lei5 Gaai1 Sam1; born 27 November 1982)[1] is a Hong Kong actress and television host contracted to TVB.

After receiving an associate degree in visual arts from the City University of Hong Kong,[2] Ali Lee briefly worked as a model for the magazine Weekend Weekly (新假期) and starred in a few television commercials.

In 2015, she participated in the dramas Raising the Bar, My "Spiritual" Ex-Lover, and Rear Mirror, garnering her first nominations for Most Improved Female Artiste and Best Supporting Actress.

[4] In the 2016 drama Fashion War, Lee played Vincy Kei, a headstrong socialite in a power struggle with Moses Chan’s character.

In the comedy drama My Ages Apart, Lee played Paris Sheung, an heiress and unpopular actress who wanted to find true love.

In 2019, Lee played cardio-thoracic surgeon Kennis Ching in the critical acclaimed medical drama Big White Duel.

In July 2019, due to her politicized social media posts, Lee was supposedly dropped from several drama series, including the sequels to Legal Mavericks, Who Wants a Baby?