Absolute Championship Akhmat (ACA), formerly known as Absolute Championship Berkut (ACB), is a Chechen mixed martial arts, kickboxing, and Brazilian jiu-jitsu organization and one of the leading promotions in Europe. To date, most events have been hosted in Grozny, Chechnya. ACA has also held events in other Russian cities, as well as in Australia, Austria, Azerbaijan, Belarus, Belgium, Brazil, Canada, China, England, France, Georgia, Germany, Italy, Kazakhstan, the Netherlands, Poland, Romania, Scotland, Slovakia, Tajikistan, Turkey, the United Arab Emirates and the United States.
ACB was founded by Mairbek Khasiev, a citizen of Chechnya. In 2009, he founded the Berkut Fight Club in Grozny which helped young fighters get the opportunity to compete at the highest level.
Several fighters who were successful in ACB have gone on to sign with more well known promotions such as the UFC. ACB had its own fight team, the Fight Club Berkut, which consisted of some of the promotion's fighters, such as Beslan Isaev, Magomed Bibulatov, Musa Khamanaev and Aslambek Saidov. ACB co-operated with other promotions in Europe by exchanging fighters, for example KSW and The Cage. ACB ran the majority of its shows live on a variety of TV networks (Match TV, Polsat Sport) throughout Europe. The promotion ran its shows live internationally on its Facebook page.
The 2017 campaign featured 27 events spanning across thirteen countries, including the United States, Austria, Poland, England, Tajikistan, Belarus, Turkey, Kazakhstan, Canada, Brazil, Germany, Australia and Russia.
On September 12, 2018, Mairbek Khasiev revealed that Absolute Championship Berkut had purchased TECH-Krep FC. Khasiev went on to explain that TECH-Krep FC would cease operation and cancel their October 26 event, and that former Tech-Krep FC head Alexey Yatsenko would become the president of ACB.
On November 28, 2018, the Head of the Chechen Republic Ramzan Kadyrov announced that the Absolute Championship Berkut (ACB) and the World Fighting Championship Akhmat (WFCA) would merge to form a single promotion.
On December 20, 2020, the U.S. Department of Treasury announced sanctions against ACA and Akhmat MMA due to their ownership by Kadyrov. Due to this, no American citizen or company can do business with them, meaning all American fighters could face fines or jail time if they fight for the organization. Brett Cooper was the first fighter to pull out of his fight at due to the sanctions.
The rankings for the ACA's fighters are both recorded and updated when information has been obtained from the ACA's website.