- Dec 3 Charles Ringling, American circus owner (Ringling Brothers and Barnum & Bailey Circus), dies at 63
- Dec 4 Ivana Kobilca, Slovenian-born painter (b. 1861)
Claude Monet
Dec 5 Claude Monet [Oscar-Claude], French impressionist painter (Water Lilies, Haystacks, Poplars), dies from lung cancer at 86

Claude Monet
- Dec 8 Jan Six, Dutch art historian/collector, dies
- Dec 10 Nikola Pašić, Kingdom of Serbia and Kingdom of the Serbs, Croats and Slovenes prime minister (b. 1845)
- Dec 12 Jean Richepin, French poet/writer (Contes sans morale), dies at 77
- Dec 14 Theo van Rysselberghe, Belgian painter (pointillism), dies at 64
- Dec 25 Yoshihito [Taishō], 123rd Emperor of Japan (1912-26), dies at 47
- Dec 29 Rainer Maria Rilke, Bohemian-Austrian poet and novelist (Ana, The City, Duino Elegies), dies at 51