- Dec 1 Arthur B Spingarn, US NAACP-chairman (1940-65)
- Dec 5 Arrigo Pedrollo, Italian composer, born in Montebello Vicentino, Veneto, Italy (d. 1964)
- Dec 7 Akiko Yosano, Japanese poet (Tangled Hair), born in Sakai, Ōsaka, Japan (d. 1942)
- Dec 10 C. Rajagopalachari, India's freedom fighter and the first Governor General of independent India, born in Thorapalli, Madras Presidency, British India (d. 1972)
- Dec 15 Hans Carossa, German writer, born in Tölz, Bavaria (d. 1956)
Joseph Stalin
Dec 18 Joseph Stalin, Dictator and General Secretary of the Soviet Union (1922-53), born in Gori, Tiflis Governorate, Russian Empire (d. 1953)
Joseph Stalin
- Dec 19 Anton Lajovic, Slovenian composer, born in Vače, Slovenia (d. 1960)
- Dec 21 Jan Łukasiewicz, Polish logician and philosopher, born in Lviv, Ukraine (d. 1956)
- Dec 23 Stephen Timoshenko, Ukrainian-born mechanical engineer (d. 1972)
- Dec 25 William Starling Burgess, American yacht designer (America Cup's Enterprise) and aviation pioneer, born in Boston Massachusetts (d. 1947)
- Dec 25 Louis Chevrolet, Swiss-born race car driver (d. 1941)
- Dec 26 Isaiah Bowman, American geography/co-founder (Geographical Review)
- Dec 30 William Aberhart, Canadian politician (d. 1943)
- Dec 31 Horacio Quiroga, Uruguayan playwright, poet, and short story writer (Anaconda, El Crimen del Otro), born in Salto, Uruguay (d. 1937)
- Dec 31 Elizabeth Arden, Canadian businesswoman, born in Woodbridge, Ontario (d. 1966)