January 1977
January 8 – Three bombs explode in Moscow within 37 minutes, killing seven. The bombings are attributed to an Armenian separatist group.
January 10 – Mount Nyiragongo erupts in eastern Zaire (now the Democratic Republic of the Congo).
January 17
49 marines from the and are killed as a result of a collision in Barcelona harbour, Spain.
January 18
Scientists identify a previously unknown bacterium as the cause of the mysterious Legionnaires' disease.
Australia's worst railway disaster at Granville, a suburb of Sydney, leaves 83 people dead.
SFR Yugoslavia Prime minister Džemal Bijedić, his wife and 6 others are killed in a plane crash in Bosnia and Herzegovina.
January 19 – An Ejército del Aire CASA C-207C Azor (registration T.7-15) plane crashes into the side of a mountain near Chiva, on approach to Valencia Airport in Spain, killing all 11 people on board.
January 20 – Jimmy Carter is sworn in as the 39th President of the United States.
January 23 – Prime Minister Indira Gandhi of India calls for fresh elections to the Lok Sabha, and releases all political prisoners.
January 24 – The Massacre of Atocha occurs, during the Spanish transition to democracy.
February 1977
February 2 – The Congress Party of India, led by Indira Gandhi, splits with Jagjivan Ram and other senior leaders, forming Congress for Democracy. This party later merges with the Janata Party.
February 3 – In northern Japan a blizzard piles snow on rooftops, causing many to collapse killing at least 31 people.
February 4 – Eleven CTA commuters are killed when an elevated train derails from the Loop in central Chicago, United States.
February 7 – The Soviet Union launches Soyuz 24 (Viktor Gorbatko, Yury Glazkov) to dock with the Salyut 5 space station.
February 18 – American Space Shuttle program: First test flight of Space Shuttle Enterprise mated to the Boeing 747 Shuttle Carrier Aircraft.
February 23 – Óscar Romero, an outspoken opponent of violence, becomes Archbishop of San Salvador, El Salvador.
February 28 – Queen Elizabeth II opens the Parliament of New Zealand.