| 721 | January 2 | Birth | 1866 – Gilbert Murray, Australian-English playwright and scholar (d. 1957) |
| 722 | January 2 | Birth | 1870 – Ernst Barlach, German sculptor and playwright (d. 1938) |
| 723 | January 2 | Birth | 1873 – Thérèse of Lisieux, French nun and saint (d. 1897) |
| 724 | January 2 | Birth | 1873 – Antonie Pannekoek, Dutch astronomer and theorist (d. 1960) |
| 725 | January 2 | Birth | 1877 – Slava Raškaj, Croatian painter (d. 1906) |
| 726 | January 2 | Birth | 1878 – Mannathu Padmanabha Pillai, Indian activist founded the Nair Service Society (d. 1970) |
| 727 | January 2 | Birth | 1879 – Rudolf Bauer, Hungarian discus thrower (d. 1932) |
| 728 | January 2 | Birth | 1882 – Herbert von Petersdorff, German swimmer (d. 1917) |
| 729 | January 2 | Birth | 1884 – Ben-Zion Dinur, Russian-Israeli historian and politician 4th Israeli Minister of Education (d. 1973) |
| 730 | January 2 | Birth | 1885 – Gordon Flowerdew, Canadian lieutenant, Victoria Cross recipient (d. 1918) |
| 731 | January 2 | Birth | 1886 – Apsley Cherry-Garrard, English explorer (d. 1959) |
| 732 | January 2 | Birth | 1886 – Florence Lawrence, Canadian-American actress (d. 1938) |
| 733 | January 2 | Birth | 1889 – Bertram Stevens, Australian accountant and politician, 25th Premier of New South Wales (d. 1973) |
| 734 | January 2 | Birth | 1890 – Henrik Visnapuu, Estonian-American poet and playwright (d. 1951) |
| 735 | January 2 | Birth | 1891 – Giovanni Michelucci, Italian architect, designed the Firenze Santa Maria Novella railway station (d. 1990) |
| 736 | January 2 | Birth | 1892 – Seiichiro Kashio, Japanese tennis player (d. 1962) |
| 737 | January 2 | Birth | 1893 – Lillian Leitzel, German acrobat and strongwoman (d. 1931) |
| 738 | January 2 | Birth | 1893 – Elmar Reimann, Estonian-Swedish runner (d. 1963) |
| 739 | January 2 | Birth | 1895 – Folke Bernadotte, Swedish lieutenant and diplomat (d. 1948) |
| 740 | January 2 | Birth | 1896 – Dziga Vertov, Polish-Russian director and screenwriter (d. 1954) |
| 741 | January 2 | Birth | 1896 – Lawrence Wackett, Australian commander and engineer (d. 1982) |
| 742 | January 2 | Birth | 1897 – Jim Londos, Greek-American wrestler (d. 1975) |
| 743 | January 2 | Birth | 1898 – Sadie Tanner Mossell Alexander, American economist and lawyer (d. 1989) |
| 744 | January 2 | Birth | 1900 – William Haines, American actor and interior designer (d. 1973) |
| 745 | January 2 | Birth | 1901 – Bob Marshall, American activist co-founded The Wilderness Society (d. 1939) |
| 746 | January 2 | Birth | 1902 – Dan Keating, Irish Republican Army volunteer (d. 2007) |
| 747 | January 2 | Birth | 1904 – Truus Klapwijk, Dutch diver and swimmer (d. 1991) |
| 748 | January 2 | Birth | 1905 – Jainendra Kumar, Indian author and translator (d. 1988) |
| 749 | January 2 | Birth | 1905 – Lev Schnirelmann, Russian mathematician and academic (d. 1938) |
| 750 | January 2 | Birth | 1905 – Michael Tippett, English composer and conductor (d. 1998) |