Roan Carneiro Pereira[1] (born 2 June 1978) is a Brazilian retired professional mixed martial artist who most recently competed in the Welterweight division of the Ultimate Fighting Championship.

A professional competitor since 2000, Carneiro was the winner of the Battlegrounds MMA's one-night, eight-man tournament, in which he won three fights to become the champion, and has also competed for DEEP.

After fighting sporadically for independent promotions between 2009 and 2013, Carneiro signed to compete in a one-night, eight-man tournament for BattleGrounds MMA on 3 October 2014.

In the finals, Carneiro defeated Brock Larson by unanimous decision to be crowned the tournament champion.

In his return fight, Carneiro replaced Caio Magalhaes against Mark Muñoz on 28 February 2015 at UFC 184.

[7] However, Carneiro was forced to pull out of the bout in mid-August with an elbow injury and was replaced by Uriah Hall.

[14] Carneiro then signed a non-exclusive contract with Absolute Championship Akhmat, losing the first two fights against Aslambek Saidov and Husein Kushagov.