Jerry Rice -- VEGAS NIGHTCLUBBIN' ... With My Super Bowl Ring

He might be 51 years old ... but Jerry Rice still LOVES to hit the clubs in Vegas -- especially when he's with the best wingman of all time ... his 1989 Super Bowl ring.

The San Francisco 49ers legend hit up Tao nightclub in Vegas on Black Friday ... where he kicked it in the VIP section, flanked by expensive bottle of booze.

Rice was cool with fans -- and even posed for some cell phone pics inside the club.

Jerry has a penchant for the Vegas club scene ... our friends at SpyOnVegas.com spotted him at another Sin City hotspot back in 2010 ... along with the very same piece of finger jewelry.