- Dec 3 Prudente José de Morais Barros, 3rd President of Brazil (1894-98), dies at 61
- Dec 7 George Darwin, theorized Moon was pulled out of Pacific Ocean, dies
- Dec 12 Luitpold von Bayern, prince-regent of Bayern, dies at 91
- Dec 14 Belgrave Edward Sutton Ninnis, British Army lieutenant, dies at 25
- Dec 23 Otto Schoetensack, German anthropologist, dies at 62
- Dec 30 Alfred von Kiderlen-Wächter, German foreign minister, dies at 60