柯佳嬿，台湾女星，有台湾“小桂纶镁”之称，形象清纯，2008年在电影《渺渺》中扮演从日本来到台湾的留学生渺渺，因其清新自然的表演而崭露头角，被部分观众所熟知。2010年，又因在电影《艋舺》中的极佳表现而一炮走红，成为大热的焦点，成为目前一颗冉冉升起的台湾演艺圈新星。

Ko Chia-Yen (Chinese: 柯佳嬿; pinyin: Kē Jiāyàn; born 10 January 1985) is a Taiwanese actress.

Ko's debut acting role was in the 2006 film Do Over, by award-winning director Cheng Yu-chieh. Subsequently, she had starring roles in the films Miao Miao (2008), Monga (2010) and Night Market Hero (2011). She first came to prominence for her role in the domestic hit series Office Girls (2011), in which she played a marketing specialist. She is also known for her role in the drama series Marry Me, or Not?, for which she won the Golden Bell Award for Best Actress in 2016.