The Embraer E-Jets are a series of narrow-body, twin-engine, medium-range, jet airliners produced by Embraer, a Brazilian aerospace conglomerate that produces commercial, military, and corporate aircraft. Announced at the Paris Air Show in 1999, and entering production in 2002, the aircraft series has been a success. As of 11 January 2012 (2012 -01-11)^[update], there is a backlog of 249 firm orders for the E-Jets, 695 options and 802 units delivered.

The Embraer E-Jets line is composed of two main commercial families and a business jet variant. The smaller E-170 and E-175 make up the base model aircraft, with the E-190 and E-195 being stretched versions, with different engines and larger wing, horizontal stabilizer and landing gear structures. The 170 and 175 share 95% commonality, as do the 190 and 195. The two families share near 89% commonality, with identical fuselage cross-sections and avionics, featuring the Honeywell Primus Epic EFIS suite.

Although commonly referred to with simply an "E" prefix, the jets are technically still Embraer Regional Jets ("ERJ"s), which still refers to the smaller Embraer ERJ range. Embraer dropped the ERJ prefix in its advertising early in production. The E-190/195 series of aircraft have similar capacities to the initial versions of the McDonnell Douglas DC-9 and Boeing 737, which have always been considered mainline airliners. Embraer developed a "double-bubble" design for its commercial passenger jet airplanes that provides stand-up headroom. Embraer E-Jets use four-abreast seating.