Roy Mayorga (born April 6, 1970) is an American musician, best known as the drummer of heavy metal bands Soulfly, Hellyeah and Stone Sour and is currently the drummer for the industrial metal band Ministry.

Mayorga was born in Forest Hills, Queens, New York City, on April 6, 1970, to Cuban and Ecuadorian parents. At four years old, his family moved to Florida. While growing up, his parents would often play Motown music and rhythm and blues, which were his earliest exposures to music. He eventually became a fan of Kiss through his older brother, which led him to become interested in rock music. He began playing drums at six years old. His parents soon divorced, leading to him moving to Allentown, Pennsylvania, where he became involved in the local punk rock scene.

Mayorga formed his first band in 1985 in Allentown, called Youthquake. When Youthquake's bassist departed from the group, the remaining members formed Word Made Flesh, which Mayorga's brother eventually joined as guitarist.

Mayorga befriended the members of New York punk rock band Nausea while living in Allentown, which led to him becoming the band's drummer in 1988. The band released their debut album Extinction in 1990 through Profane Existence, which was accompanied by a European headline tour, and a tour in support of D.O.A. In the following year, the band recorded a number of songs for compilations, as well as the single "Cybergod". Additionally, the tour the U.S. west coast, with local support from Final Conflict, Neurosis, Asbestosdeath and Mindrot, before departing on a second European headline tour supported by the Radicts, however Nausea were unable to complete the final leg of the tour. In 1992, they released their final single "Lie Cycle", through Graven Image Records, before breaking up in the following months. While living in New York City, Mayorga began working as a live sound engineer for nightclubs such as CBGB, Wetlands, and Coney Island High.

After Nausea's breakup, Mayorga formed Thorn with Stephan Flam and ex-Nausea guitarist John John Jesse. After their fourth live performance, they signed to Roadrunner Records.

He also played with New York hardcore punk band Shelter in 1996. He also played drums on the album The Hollowing with metal band Crisis in 1996.

Mayorga formed the heavy metal band Soulfly in 1997, with former Sepultura vocalist Max Cavalera. He and Cavalera co-wrote much of the music for the band's self-titled debut album. He then departed from the band in 1999. In 2001, he rejoined the band, performing on their 2002 album 3, before leaving again in 2003 in protest of the firing of bassist Cello Dias.

He was briefly a member of the band Medication from 1999 to 2001.