Boeing 737 Next Generation
Delta Air Lines Boeing 737-832; N3747D@LAX;10.10.2011 622in (6482376485).jpg
The 737-800 is the most common 737NG variant
Role Narrow-body jet airliner
National origin United States
Manufacturer Boeing Commercial Airplanes
First flight February 9, 1997
Introduction December 17, 1997 with Southwest Airlines[1]
Status In service
Primary users Southwest Airlines
United Airlines
American Airlines
Produced 1996–present[N 1]
Number built 7,065 as of October 2020[3]
Unit cost
(2019 US$ million) -700: $89.1; -800: $106.1; -900ER: $112.6[4]
Developed from Boeing 737 Classic
Variants Boeing Business Jet
Boeing 737 AEW&C
Boeing C-40 Clipper
Boeing P-8 Poseidon
Developed into Boeing 737 MAX

The Boeing 737 Next Generation, commonly abbreviated as 737NG, or 737 Next Gen is a narrow-body aircraft powered by two engines and produced by Boeing Commercial Airplanes. Launched in 1993 as the third generation derivative of the Boeing 737, it has been produced since 1997[5] and is an upgrade of the 737 Classic (−300/-400/-500) series.

It features a redesigned wing with a larger area, a wider wingspan, greater fuel capacity and higher maximum takeoff weights (MTOW). It is equipped with CFM International CFM56-7 series engines, a glass cockpit, and features upgraded and redesigned interior configurations. It has a longer range and larger variants than its predecessor: the series includes four models, the −600/-700/-800/-900, seating between 108 and 215 passengers. The 737NG's primary competition is with the Airbus A320 family.

As of September 30, 2020, a total of 7,110 737NG aircraft had been ordered, of which 7,064 had been delivered, with remaining orders for the -700W, -800, and -800A variants. The most common variant was the 737-800 with 4,991 commercial, 175 military and 23 corporate jets ordered of which 4,989, 136 and respectively 21 delivered.[3] Boeing stopped assembling commercial 737NGs in 2019 and made the final deliveries in January 2020.[2] The 737NG is superseded by the fourth generation 737 MAX, introduced in 2017.