Dirty thirty

Dirty thirty may refer to:

• Dirty 30 (film), a 2016 comedy film
• Dirty Thirty (album), a 2019 compilation album by Australian rock band The Screaming Jets
• Dirty thirty (Guantanamo Bay Naval Base), a group of Arab captives in Guantanamo, believed to be Osama bin Laden bodyguards
• Dirty thirty (NYPD), a 1990s group of NYPD officers suspected of improprieties
• Dirty thirty (Sellafield), Building B30 at Sellafield, "the most hazardous industrial building in western Europe"
• Dirty thirty (Vietnam), a group of USAF pilots in the Vietnam War
• Dirty thirty (WWF), the World Wildlife Federation list of dirty fossil-fueled electric plant
• Dirty Thirty, a group of rogue agents in the TV series Nikita
• The Challenge XXX: Dirty 30, the 30th season of the MTV reality competition series, The Challenge