This year saw the beginning of what became known as World War I, after Archduke Franz Ferdinand of Austria, heir to the Austrian throne was assassinated by Serbian nationalist Gavrilo Princip. It also saw the first airline to provide scheduled regular commercial passenger services with heavier-than-air aircraft, with the St. Petersburg–Tampa Airboat Line.
January 1914
January 1 – The St. Petersburg–Tampa Airboat Line in the United States starts services between St. Petersburg and Tampa, Florida, becoming the first airline to provide scheduled regular commercial passenger services with heavier-than-air aircraft, with Tony Jannus (the first federally-licensed pilot) conveying passengers in a Benoist XIV flying boat. Abram C. Pheil, mayor of St. Petersburg, is the first airline passenger, and over 3,000 people witness the first departure.
January 11 – The Sakurajima volcano in Japan begins to erupt, becoming effusive after a very large earthquake on January 13. The lava flow causes the island which it forms to be linked to the Ōsumi Peninsula.
January 11 – The Karluk, flagship of the Canadian Arctic Expedition, sinks after being crushed by ice.
February 1914
February 8 – The Luxembourg national football team has its first victory, beating France 5–4 in a friendly match, for the first and only time in football history.
February 12 – In Washington, D.C., the first stone of the Lincoln Memorial is put into place.
February 13 – Copyright: In New York City, the American Society of Composers, Authors and Publishers is established, to protect the copyrighted musical compositions of its members.
February 17 – Karl Staaff steps down as Prime Minister of Sweden, in the aftermath of the Courtyard Crisis. He is replaced by Hjalmar Hammarskjöld, father of Dag Hammarskjöld.
February 26 – The ocean liner that will become HMHS Britannic, sister to the , is launched at the Harland and Wolff shipyards in Belfast.
February 28 – The Autonomous Republic of Northern Epirus is proclaimed by ethnic Greeks, in Northern Epirus.