"Bump n' Grind" is a song written, produced and performed by R&B musician R. Kelly. It was the second single released from his first solo album 12 Play in 1994. The track became Kelly's first number one single on the U.S. Billboard Hot 100 (temporarily interrupting the six-week run of Ace of Base's "The Sign") and it spent twelve weeks at number one on the U.S. Hot R&B/Hip-Hop Songs chart, becoming the longest-running number-one U.S. R&B single at that time.

This song is the last track on the B side of DJ Screw's screw tape, "Late Night Fuckin' Yo Bitch".