Lan Cheng-lung (Chinese: 藍正龍; Pe̍h-ōe-jī: Nâ Chèng-liông, born March 1, 1979), also known as Blue Lan, is a Taiwanese actor and film director.

[1][2] He started his career as a commercial model, and made his acting debut in 2000.

He gained attention for a small role as Ya-men in Meteor Garden and went on appearing in many popular films and dramas, including Night Market Hero (2011) and The Wonderful Wedding (2015).

In 2006, he dated Yvonne Yao for three months,[3] followed by a two-year relationship with his non-celebrity girlfriend Lin Xinru until 2008.

[4] In late 2009, he briefly dated Easy Fortune Happy Life co-star Jocelyn Wang.