OFZ may refer to:

• Obstacle-free zone, the protected airspace around an airport runway
• OFZ (bond), Russian government bonds
• Owen Fracture Zone, a transform fault in the northwest Indian Ocean

• Climate change in the Arctic
• Climate change levy
• Climate Change Research Centre
• Climate change response
• Climate Change Response
• Climate change sceptic
• Climate change scepticism
• Climate change sceptics
• Climate Change Science Program
• Climate changes effects on bird migration
• Climate change skeptic
• Climate change skepticism
• Climate change skeptics
• Climate changes of 535-536
• Climate changes of 535–536
• Climate Change Solutions
• Climate classification
• Climate classification scheme
• Climate classification system
• Climate classification systems
• Climate crash
• Climate credits
• Climate cycle
• Climate cycles
• Climate (disambiguation)