Red belt may refer to:
Red Belt (Pennsylvania), Allegheny County road belt system Red Belt (Pittsburgh), Allegheny County road belt system Red belt (martial arts) Red belt (Brazilian Jiu-Jitsu) Red-Belted Clearwing, the European name of Synanthedon myopaeformis Redbelt, 2008 American film
Left-leaning areas Red Belt (Russia), area dominated by the Communist Party of the Russian Federation Red belt (Italy), area dominated by the PSI, PCI, PDS and PD Red belt (Community of Madrid) Red belt (India), the area where Maoist insurgency operates Red belt (France), area around Paris dominated by the PCF