Big Rube (born Ruben Bailey in Atlanta, Georgia) is an American rapper and hip-hop producer. He is a first generation member of the Dungeon Family & Society of Soul.He is known for his spoken word intros and interludes for many of the Dungeon Family’s albums including Bubba Sparxxx, Goodie Mob, OutKast, & Witchdoctor. He has also contributed his spoken word poetry to Russell Simmons' Def Poetry Jam and the motion picture ATL, as well as appearing on albums by Truth Hurts, Eightball & MJG and CunninLynguists. He appears on a Cee-Lo track called Scrap Metal.

In 1996, he appeared on the Red Hot Organization's compilation CD, America is Dying Slowly, alongside Biz Markie, Coolio, and Fat Joe, among many other prominent hip hop artists. The CD, meant to raise awareness of the AIDS epidemic among African American men, was heralded as "a masterpiece" by The Source magazine.