“Black and Yellow” rapper Wiz Khalifa tried to hide a bag of weed in his room at a Holiday Inn in Nashville today … this according to law enforcement.

According to the Metro Nashville Police, cops responded to Wiz’s room after someone complained about a strong odor of marijuana.

When officers arrived to the scene, Wiz — real name Cameron Jibril Thomaz — allegedly tossed an item in hopes of hiding it from police. Cops say they retrieved the item — which turned out to be a small bag of ganja.

Wiz — who’s VERY open about his marijuana use — was hit with a citation … and probably smoked more weed after the officers left.