Mark DellaGrotte (born November 14, 1974) is an American former professional Muay Thai kickboxer and a trainer in Muay Thai. He is the owner and operator of the Sityodtong USA Branch in Somerville, Massachusetts, and was certified and appointed by Master Yodtong to be recognized as an international conservator of Thai style boxing. Mark also has extensive training and is certified in the arts of Kali Escrima, Pencak Silat, Jeet Kune Do, Savate, and Brazilian Jiu-Jitsu.
DellaGrotte, known for his Boston accent, is a featured kickboxing trainer in Spike TV's "The Ultimate Fighter 4." He also has trained mixed martial arts fighters like Kenny Florian, Frank Mir, Stephan Bonnar, Marcus Davis, Alex Karalexis, Jorge Rivera and Patrick Côté .
DellaGrotte is the owner and operator of the Sityodtong USA Branch. He began his martial arts studies at an early age. His initial training involved classical martial arts, such as Tae Kwon Do, Shotokan and Tai-Chi. As his athleticism and martial skills grew, so did his desire to further his training in the martial arts.
In 1992, his quest for a more combative martial art was complete when he met Guro Guy Chase, who had studied with some of the greatest martial artists of his time. Guro Chase had trained with Dan Inosanto, Ben Lagusa, Herman Suwanda, Ted Lucay, Salam Allsi, Surachai Sirisute and even Karl Gotch.