American Top Team is one of the primary teams in mixed martial arts. The gym was founded by Dan Lambert, who brought in former members of Brazilian Top Team Marcus "Conan" Silveira, Marcelo Silveira and Ricardo Liborio, but there is no formal affiliation between the two teams.  ATT's main academy is in Coconut Creek, Florida, and there are affiliated academies throughout the United States.

ATT produced a fighter in 2020 who fought 3 times and went undefeated for the year. Heavyweight Said Sowma fought for Titan FC and won all three fights within the promotion. After his wins, Titan released Said to make his debut with Bellator. Unfortunateky Said lost his fight but continues to fight for Bellator.