Andrew P. 'Andy' Wang (born May 28, 1977) is a Taiwanese American mixed martial artist, currently competing in the lightweight division. Wang received his Brazilian Jiu-jitsu black belt from Egan Inoue and is a Brazilian Jiu-jitsu instructor at the Taiwan Brazilian Jiu-Jitsu Academy in Taipei.

Wang was a contestant on The Ultimate Fighter 5 show, featuring fighters in the lightweight division. He originally fought for B.J. Penn's Team. Wang lost his preliminary fight against Brandon Melendez on the show by decision.

He suffered an 8" reach disadvantage during the fight with Melendez. However, Wang (a BJJ black belt) ignored repeated instructions from Penn to go for a take down ("Take em down, Andy!"), instead choosing to strike with Melendez, who was known to have good stand-up skills. After losing, Wang broke down into tears but received no sympathy from Penn in a post-fight interview.

In a first for The Ultimate Fighter, Wang was kicked off of Penn's team for not following Penn's directions during Wang's fight with Melendez. Pulver offered to give him a second chance and a spot on his team, but Wang brooded over the rejection from Team Penn and perceived the switching of teams a violation of his commitment to Penn, comparing himself to a Ronin. Eventually Team Pulver picked him up, and he finished the season as an injury stand-in for Team Pulver.

Wang was paired up against Cole Miller in the The Ultimate Fighter 5 Finale. During the pre-fight buildup, Wang stated that he thought he was one of the best 155 pound fighters in the UFC, that he had a new ground focused game plan, and that he was a "warrior". Despite Wang's assurances that he would take the fight to the ground, he spent the majority of the fight trying to strike. The bout was eventually stopped at 1:10 of the first round with Miller winning via a TKO.

Wang has since become the subject of numerous jokes on the forums of the MMA-related web site Sherdog and other mixed martial arts forums.