Chantavit Dhanasevi is a Thai actor, director, and screenwriter. He studied at Chulalongkorn University and graduated with a bachelor's degree in Communication Arts with a focus on film and photography. While studying on campus, he worked on several faculty productions from 2001 to 2006.

After graduating, Chantavit began working as a freelancer, doing screenwriting, assistant directing, behind-the-scenes filming, and acting coaching for GTH. He played several small roles in many GTH films until 2008, when he got one of the lead roles in Hormones. He then played another lead role in the horror film Coming Soon. He was also credited as a screenwriter for 4Bia and Phobia 2 in 2008-2009.

In 2010, Chantavit became a well-known film actor after the romantic comedy blockbuster Hello, Stranger with Nuengthida Sophon, in which he was also credited as a co-writer. His role in Hello, Stranger earned him a Star Hunter award as one of the 10 most promising young actors in Asia at the 2011 Shanghai International Film Festival.

In 2012, he returned with another blockbuster, ATM: Er Rak Error, alongside rising talented actress Preechaya Pongthananikorn. ATM became GTH's highest-grossing film at the time (later surpassed by Pee Mak in 2013).