Yuthlert Sippapak (Thai: ยุทธเลิศ สิปปภาค, born November 8, 1966 in Loei, Thailand) is a Thai film director, screenwriter and producer. He is best known for his genre-blending films Killer Tattoo (comedy and action) and Buppah Rahtree (comedy and horror). Growing up in northeast Thailand, Yuthlert developed a strong interest in the arts from an early age and at 18 went to Bangkok to study fine arts at Silpakorn University, where he received a degree in interior design (the same program as another Thai director, Wisit Sasanatieng).
Yuthlert set up his own design company, which he worked at for a year before his interest waned. He then moved to New York City, where he studied at the Art Students League of New York. This put him in touch with a group of friends who were involved in the film business, which made him think that was something he wanted to do.
He returned to Thailand and submitted a script to Tai Entertainment and told them that he wanted to direct a movie. The script and his offer to direct were rejected. He then offered a three-page script called Always Love, and it was rejected.
Yuthlert returned to New York and worked for a time doing architectural drawing while also studying filmmaking on his own and developing his script-writing abilities.
He returned to Thailand and Tai Entertainment, offering a screenplay for O-Negative, which was based on his three-page script. Tai Entertainment offered him a position as the assistant director on the film, but he turned them down and took back his script. He ended up selling the script to GMM Grammy and had the project taken away from him. The film starred Tata Young.
So he wrote another script, which became Killer Tattoo, about a group of aging and/or mentally challenged assassins. He took it to RS Film's Avant Co. Ltd., which allowed him to direct the film and cast an ensemble of Thai comedians, including Suthep Po-ngam and Petchtai Wongkamlao, as the stars.
In 2002, he established Mahagan Films Co. Ltd. as his production company. And in 2003, for his sophomore directorial effort, the drama February, he returned to Grammy's GMM Pictures for a distribution deal.