This is a list of aviation-related events from 1977.
The Tenerife airport disaster on 27 March heavily defined 1977 in aviation; it is the deadliest accident in aviation history. Two Boeing 747's collided on the runway at Los Rodeos Airport on the island of Tenerife, Spain in heavy fog; 583 people were killed, far exceeding the death toll of any previous accident and unbeaten since. This included all 248 people aboard KLM Flight 4805, whose pilot committed the main factor in the accident of taking off without a clearance; and 335 of the 396 people on board Pan Am Flight 1736, the other 747 involved in the accident. The crash is arguably the most famous of all time; it changed the history and training of aviation in the years that followed. Elsewhere, 1977 had relatively few accidents in comparison to the years immediately preceding and succeeding it.