Ronald Oneil Spence, Jr. (born September 14, 1992), better known as his stage name RONNY J (originally stylized as RONNYJ) or Ronny J Listen Up (stylized as RONNYJLI$TENUP), is an American record producer, rapper, and disc jockey from Camden, New Jersey. He was raised in Woodbury, New Jersey and is currently based in Miami, Florida.

He is a member of Denzel Curry’s Miami-based hip hop collective C9 and was originally signed to Atlantic Records under the independently popular. umbrella, however he has since left the label and is now releasing solo material independently.

RONNY J gained notoriety for his production for south Florida rap artists, such as Denzel Curry, Lil Pump, Ski Mask The Slump God, and XXXTENTACION. Building off his success with the Florida rap scene, RONNY has expanded, collaborating with artists like Kanye West and Eminem.

On February 23, 2018, RONNY J released his debut mixtape, OMGRONNY. He would then follow that up with his debut studio album, Jupiter, released on August 14, 2020. Three years later, RONNY would release his third studio album, CHARGED UP.