List of Famous people who died in 1939

Emich, 5th Prince of Leiningen was the son of Ernst Leopold, 4th Prince of Leiningen. He was 5th Prince of Leiningen from 1904 to 1918, and afterwards titular Prince of Leiningen from 1918 until his death.

Heinrich Brauns was a German politician and Roman Catholic theologian, who for the German Center Party was a long-serving Minister of Labour of the Weimar Republic from 1920 to 1928. Serving in a total of 13 cabinets, Brauns was a major influence on social policy in the period of German history.

Ludwig Hopf was a German-Jewish theoretical physicist who made contributions to mathematics, special relativity, hydrodynamics, and aerodynamics. Early in his career he was the assistant to and a collaborator and co-author with Albert Einstein.

Joseph Grinnell was an American field biologist and zoologist. He made extensive studies of the fauna of California, and is credited with introducing a method of recording precise field observations known as the Grinnell System. He served as the first director of the Museum of Vertebrate Zoology at the University of California, Berkeley from the museum's inception in 1908 until his death.

Harvey Spencer Lewis F.R.C., S:::I:::I:::, 33° 66° 95°, PhD, a noted Rosicrucian author, occultist, and mystic, was the founder in the USA and the first Imperator of the Ancient and Mystical Order Rosae Crucis (AMORC), from 1915 until 1939.

Dmitry Aleksandrovich Grave was a Russian and Soviet mathematician.

Kullervo Achilles Manner was a Finnish politician and journalist, and later a Soviet politician. He was a member of the Finnish parliament, serving as its Speaker in 1917. He was also chairman of the Social Democratic Party of Finland between 1917 and 1918. During the Finnish Civil War, he led the Finnish People's Delegation, a leftist alternative to the established Finnish government. After the war, he escaped to the Soviet Union, where he co-founded the Finnish Communist Party. It is said if the Red Guards had won the Civil War, Manner might have risen to the position of the "Leader of the Red Finland".

Princess Zinaida Nikolayevna Yusupova was an Imperial Russian noblewoman, the only heiress of Russia's largest private fortune of her time. Famed for her beauty and the lavishness of her hospitality, she was a leading figure in pre-Revolutionary Russian society. In 1882, she married Count Felix Felixovich Sumarokov-Elston, who served briefly as General Governor of Moscow (1914–1915). Zinaida is best known as the mother of Prince Felix Yusupov, the murderer of Rasputin. She escaped revolutionary Russia and spent her remaining years living in exile.