| 7861 | January 18 | Birth | 1884 – John Eisele, American runner (d. 1933) |
| 7862 | January 18 | Birth | 1886 – Clara Nordström, Swedish-German author and translator (d. 1962) |
| 7863 | January 18 | Birth | 1888 – Thomas Sopwith, English ice hockey player, sailor, and pilot (d. 1989) |
| 7864 | January 18 | Birth | 1891 – Nikolajs Švedrēvics, Latvian javelin thrower (d. 1937) |
| 7865 | January 18 | Birth | 1892 – Oliver Hardy, American actor, singer, and director (d. 1957) |
| 7866 | January 18 | Birth | 1892 – Bill Meanix, American hurdler and coach (d. 1957) |
| 7867 | January 18 | Birth | 1892 – Paul Rostock, German surgeon and academic (d. 1956) |
| 7868 | January 18 | Birth | 1894 – Toots Mondt, American wrestler and promoter (d. 1976) |
| 7869 | January 18 | Birth | 1896 – C. M. Eddy, Jr., American author (d. 1967) |
| 7870 | January 18 | Birth | 1896 – Ville Ritola, Finnish-American runner (d. 1982) |
| 7871 | January 18 | Birth | 1898 – Albert Kivikas, Estonian journalist and author (d. 1978) |
| 7872 | January 18 | Birth | 1901 – Ivan Petrovsky, Russian mathematician and academic (d. 1973) |
| 7873 | January 18 | Birth | 1903 – Berthold Goldschmidt, German composer (d. 1996) |
| 7874 | January 18 | Birth | 1904 – Anthony Galla-Rini, American accordion player and composer (d. 2006) |
| 7875 | January 18 | Birth | 1904 – Cary Grant, English-American actor and singer (d. 1986) |
| 7876 | January 18 | Birth | 1905 – Joseph Bonanno, Italian-American mob boss (d. 2002) |
| 7877 | January 18 | Birth | 1907 – János Ferencsik, Hungarian conductor (d. 1984) |
| 7878 | January 18 | Birth | 1908 – Jacob Bronowski, Polish-English mathematician, historian, and television host (d. 1974) |
| 7879 | January 18 | Birth | 1908 – Princess Sibylla of Saxe-Coburg and Gotha (d. 1972) |
| 7880 | January 18 | Birth | 1910 – Kenneth E. Boulding, English economist and academic (d. 1993) |
| 7881 | January 18 | Birth | 1911 – José María Arguedas, Peruvian anthropologist, author, and poet (d. 1969) |
| 7882 | January 18 | Birth | 1911 – Danny Kaye, American actor, singer, and dancer (d. 1987) |
| 7883 | January 18 | Birth | 1913 – Giannis Papaioannou, Greek composer (d. 1972) |
| 7884 | January 18 | Birth | 1914 – Arno Schmidt, German author and translator (d. 1979) |
| 7885 | January 18 | Birth | 1914 – Vitomil Zupan, Yugoslav author, poet, and playwright (d. 1987) |
| 7886 | January 18 | Birth | 1915 – Syl Apps, Canadian pole vaulter, ice hockey player, and politician (d. 1998) |
| 7887 | January 18 | Birth | 1915 – Santiago Carrillo, Spanish soldier and politician (d. 2012) |
| 7888 | January 18 | Birth | 1915 – Vassilis Tsitsanis, Greek singer-songwriter and bouzouki player (d. 1984) |
| 7889 | January 18 | Birth | 1917 – Wang Yung-ching, Taiwanese-American businessman (d. 2008) |
| 7890 | January 18 | Birth | 1918 – Gustave Gingras, Canadian-English physician and educator (d. 1996) |