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The General Electric CF34 is a civilian turbofan developed by GE Aircraft Engines from its TF34 military engine. The CF34 is used on a number of jet airliners, including the Bombardier CRJ series, the Embraer E-Jets, and the Chinese ARJ21 under development. As of 2012, there are over 5,600 engines in service.

CF34
Canadair CL-600-2B19 Regional Jet CRJ-200LR, UTair Aviation AN2213397.jpg
A CF34 installed on a Bombardier CRJ200
Type Turbofan
National origin United States
Manufacturer General Electric
First run 1982
Major applications Bombardier Challenger 601/604/605
Bombardier Challenger 850
Bombardier CRJ
Comac ARJ21
Embraer E-Jets
Unit cost CF34-8C5: $4 million (2012)
CF34-10E: $7.3 Million (2012)
Developed from General Electric TF34
Developed into General Electric NG34
A CF34-8 mounted on the #2 (inner) pylon of GE's Boeing 747-100 flight test aircraft at Mojave Airport in 2002
CF34 engine mounted on an Embraer E-190
Recent versions of the CF34 feature chevrons on the core nozzle outlet.

The General Electric CF34 is a civilian turbofan developed by GE Aircraft Engines from its TF34 military engine. The CF34 is used on a number of jet airliners, including the Bombardier CRJ series, the Embraer E-Jets, and the Chinese ARJ21 under development. As of 2012, there are over 5,600 engines in service.