Thunderdome is an arena for steel-cage fights to the death in the 1985 Australian post-apocalyptic film Mad Max Beyond Thunderdome. In real life it means a large enclosed arena or space where fighting events take place and are characterized by a lack of rules, similar to how it is in Mad Max Beyond Thunderdome.

Thunderdome may also refer to:

• "We Don't Need Another Hero" (Thunderdome), a 1985 song by Tina Turner featured in the film
• Thunderdome (album), a 2004 album by the German melodic-metal band Pink Cream 69
• Thunderdome (music festival), a gabber music event in the Netherlands
• Thunderdome, a song by German metal band Primal Fear
• Excision Presents Thunderdome, an EDM concert held in Tacoma, Washington.

• ThunderDome (St. Petersburg, Florida), the former name of Tropicana Field, a domed stadium in St. Petersburg, Florida
• WWE ThunderDome, WWE's behind closed doors arena production and staging during the COVID-19 pandemic
• A nickname for Paycom Center, a multi-purpose arena in Oklahoma City, Oklahoma
• A nickname for Hubert H. Humphrey Metrodome, a former domed stadium in Minneapolis, Minnesota
• A nickname for the UC Santa Barbara Events Center, an indoor multi-purpose arena at the University of California, Santa Barbara, California

• Thunderdome Stadium, a former name of SCG Stadium, Muang Thong Thani, Nonthaburi, Thailand
• Calder Park Thunderdome, an oval speedway in Melbourne, Australia
• A former name of Gateshead International Stadium, England

• Death Guild Thunderdome, a popular regular feature at Burning Man, recreating the arena from the film Mad Max Beyond Thunderdome at the Death Guild camp