The Lavochkin La-11 (NATO reporting name Fang) was an early post-World War II Soviet long-range piston-engined fighter aircraft.

The design was essentially that of a Lavochkin La-9 with additional fuel tanks and the deletion of one of the four 23 mm Nudelman-Suranov NS-23 cannons.

In reality, the La-11 would go on to serve almost exclusively as an interceptor, with the majority of its engagements during the Korean War seeing it pitted against bomber and transport aircraft.

While an improvement over earlier aircraft, the La-9 and La-11 retained the poor high-altitude performance that was common among many Soviet piston-engined airframes, with the La-11 enjoying only a 20 km/h (12 mph) advantage over the Boeing B-29 Superfortress at the latter’s cruising altitude.

From February 1950, the Soviet 106th Fighter Aviation Division moved to Shanghai to defend it against bombing by the ROCAF.

[citation needed] The main target of La-11 pilots during the Korean War was the Douglas A-26 Invader night bomber, although numerous skirmishes with P-51s also took place.

On July 23, 1954, a Douglas C-54 Skymaster military transport aircraft, registration VR-HEU, operated by Cathay Pacific Airways on a civilian passenger flight en route from Bangkok to Hong Kong, was shot down by two La-11 fighters[citation needed] of the 85th Fighter Regiment, People's Liberation Army Air Force (PLAAF) off the coast of Hainan Island, killing 10 people in an incident that has become known as the 1954 Cathay Pacific Douglas DC-4 shootdown.

During 1954–55, La-11 fighters of the PLAAF took part in the Battle of Yijiangshan Islands escorting the ships of the People's Liberation Army Navy and Tu-2 bombers.