Hjalmar Branting, Swedish journalist and politician, 16th Prime Minister of Sweden, Nobel Prize laureate (died 1925)

Karl Hjalmar Branting was a Swedish politician who was the leader of the Swedish Social Democratic Party (SAP) from 1907 until his death in 1925, and three times Prime Minister of Sweden. When Branting came to power in 1920, he was the first Social Democratic Prime Minister of Sweden. When taking office for a second term after the general election of 1921, he became the first social democratic head of government in Western Europe elected under universal suffrage. An early supporter of modern social democracy and democratic socialism, he led the SAP through a transformation from a radical socialist movement to Sweden's dominant party; the Social Democrats have been Sweden's largest party in every election since 1914, and formed government for 44 continuous years from 1932 to 1976.

The prime minister of Sweden is the head of government of the Kingdom of Sweden. The prime minister and their cabinet exercise executive authority in the Kingdom of Sweden and are subject to the Parliament of Sweden. The prime minister is nominated by the speaker of the Riksdag and is elected by the chamber by simple majority, using negative parliamentarianism. The Riksdag holds elections every four years, in the even year between leap years.

The Nobel Peace Prize is one of the five Nobel Prizes established by the will of Swedish industrialist, inventor, and armaments manufacturer Alfred Nobel, along with the prizes in Chemistry, Physics, Physiology or Medicine, and Literature. Since March 1901, it has been awarded annually to people who have "done the most or the best work for fraternity between nations, for the abolition or reduction of standing armies and for the holding and promotion of peace congresses." The Oxford Dictionary of Contemporary History describes it as "the most prestigious prize in the world."