The Mason Jar was a nightclub and music venue in Phoenix, Arizona. It was known for rock music, alternative rock, punk rock, hip hop, and heavy metal in the 1980s, 1990s and 2000s. Many famous bands such as Nirvana, Rob Zombie, The Ramones, Joan Jett, Stone Temple Pilots, the Red Hot Chili Peppers, Pearl Jam, Tool, The Black Crowes, Los Lobos, Meat Puppets, and many others took the stage during its heyday.