Alexandr Romanov (born December 11, 1990) is a Moldovan professional mixed martial artist and freestyle wrestler who competes in the Heavyweight division. He has also fought in the Ultimate Fighting Championship (UFC) and the Professional Fighters League (PFL). As of April 21, 2026, he is #5 in the PFL heavyweight rankings.

He currently competes in the Heavyweight division of Real American Freestyle (RAF).

Romanov started training in freestyle wrestling at age seven. He has made four Moldovan World Teams (two as a senior and two as a junior) and eight European Teams (five as a senior, three as an age-group wrestler). His best result has been a bronze medal at the 2016 World University Championships. His last performance to date took place at the 2020 European Wrestling Championships, where he placed twelfth. He is also a two-time UWW grappling European bronze medalist.

Romanov studied at law faculty of Comrat State University and pedagogical faculty of Chișinău Sport Institute.

Alexandr Romanov also competed in sumo for a brief time. While his time in the sport was not long, he won silver in the OPEN European Cup in 2016.

Romanov debuted for Real American Freestyle at RAF 02 on October 25, 2025, losing to Mason Parris. He will headline RAF 09 against Gable Steveson on May 30, 2026.

Early in his career after his stint in wrestling, Romanov found Chelsea Edward, a Muay Thai coach. Edward brought Romanov into the sport of MMA and remains his coach to this day.

Romanov compiled a record of 11 wins and no losses while competing in his native Moldova, primarily at Eagles Fighting Championship, where he became the heavyweight champion.