Marlon Moraes (born April 26, 1988) is a Brazilian former professional mixed martial artist who last competed in the Featherweight division of the Professional Fighters League (PFL). He previously competed in the bantamweight division of the Ultimate Fighting Championship (UFC) and World Series of Fighting (WSOF), the original incarnation of the PFL. He was the former and inaugural WSOF Bantamweight Champion.

Moraes got his start in martial arts with Muay Thai at age seven and began training in Brazilian Jiu-Jitsu at age 15. He saw national success in Muay Thai in his native Brazil, earning a pair of Muay Thai National Championships before switching full-time to MMA.

On December 2, 2011, Moraes fought Chris Manuel at XFC 15, winning via unanimous decision.

On April 13, 2012, Moraes fought Jarrod Card at XFC 17, He won via knock out in 47 seconds of round one.

In September 2012, Moraes signed with the World Series of Fighting.

On November 3, 2012, Moraes made his promotional debut against former WEC Bantamweight Champion Miguel Torres at WSOF 1. Moraes defeated Torres via split decision.

Following Moraes's victory over Torres, it was announced that at WSOF 2 Moraes would face Tyson Nam. On March 23, 2013, Moraes defeated Nam via knockout due to a head kick and punches in the first round.

Moraes faced Brandon Hempleman at WSOF 4 on August 10, 2013. Moraes won via unanimous decision.