Soa Palelei (born 12 July 1977) is an Australian retired mixed martial artist. A professional from 2002 until 2015, he most notably competed for the Ultimate Fighting Championship and PRIDE Fighting Championships.

Born in 1977, Newcastle, New South Wales, of Tongan descent, Palelei started his fighting career at an early age. Wrestling was his first choice in the earlier years and nearly saw him compete for Australia at the Olympics in Sydney. Palelei's interest quickly grew in the arena of martial arts and from there his love of the mixed martial arts grew.

Palelei has a mentoring program called Hulk Kids MMA, in which he mentors teens on every aspect of life, combined with training and diet tips this program is available for schools and community groups.

Palelei published a memoir, titled Face Your Fears, in June 2016.

Palelei made his acting debut in the 2014 Australian film, Son of a Gun, playing the role of a henchmen Tommy alongside Ewan McGregor, Matt Nable and Brenton Thwaites. Since then Palelei has played the lead in Zombie Ninjas Vs Black Ops which is due to be released in 2015, and Football Breakers an Australian Comedy. In 2017 Palelei appeared alongside Matt Nable, Ryan Corr, Abbey Leigh, Eddie Baroo and Simone Kessell in 1%.

Palelei made his professional MMA debut in September 2002. He was undefeated for the first two years of his career, going 7–0 with all wins either by TKO or submission. He suffered his first defeat via submission to Choi Mu-Bae at PRIDE 28 in October 2004.

Palelei had a brief stint in the UFC at UFC 79 against Eddie Sanchez, losing by TKO in the third round. He was released from the promotion shortly after.

He was at one stage linked a fight at ONE FC – Pride of a Nation against former UFC Heavyweight Champion Andrei Arlovski, however ONE FC officials pulled him from the fight as he refused to sign a five-fight exclusive contract with ONE Fighting Championship. He was replaced by former UFC Heavyweight Champion Tim Sylvia.