Serbian prime minister Nikola Pašić and Yugoslav Committee president Ante Trumbić signed the Corfu Declaration, agreeing to seek the establishment of the Kingdom of Serbs, Croats, and Slovenes.

Nikola Pašić was a Serbian and Yugoslav politician and diplomat. During his political career, which spanned almost five decades, he served five times as prime minister of Serbia and three times as prime minister of Yugoslavia, leading 22 governments in total. He played an instrumental role in the founding of Yugoslavia and is considered one of the most influential figures in Serbian twentieth-century history. With 12 years in office, Pašić was the longest-serving prime minister of Serbia.

The Yugoslav Committee was a World War I-era, unelected, ad-hoc committee. It largely consisted of émigré Croat, Slovene, and Bosnian Serb politicians and political activists whose aim was the detachment of Austro-Hungarian lands inhabited by South Slavs and unification of those lands with the Kingdom of Serbia. The group was formally established in 1915 and last met in 1919, shortly after the breakup of Austria-Hungary and the establishment of the Kingdom of Serbs, Croats and Slovenes, which was later renamed Yugoslavia. The Yugoslav Committee was led by its president, the Croat lawyer Ante Trumbić, and, until 1916, by Croat politician Frano Supilo as its vice president.

Ante Trumbić was a Yugoslav and Croatian lawyer and politician in the early 20th century.

The Corfu Declaration was an agreement between the prime minister of Serbia, Nikola Pašić, and the president of the Yugoslav Committee, Ante Trumbić, concluded on the Greek island of Corfu on 20 July 1917. Its purpose was to establish the method of unifying a future common state of the South Slavs living in Serbia, Montenegro and Austria-Hungary after the First World War. Russia's decision to withdraw diplomatic support for Serbia following the February Revolution, as well as the Yugoslav Committee's sidelining by the trialist reform initiatives launched in Austria-Hungary, motivated both sides to attempt to reach an agreement.