| 2026-01-01 | January | Anniversary (National Day) | Sudan: Independence Day (1956) |
| 2026-01-01 | January | Anniversary (National Day) | Haiti: Independence Day (1804) |
| 2026-01-01 | January | Anniversary (National Day) | Cuba: Triumph of the Revolution (1959) |
| 2026-01-01 | January | Anniversary (National Day) | Samoa: Independence from New Zealand (1962) |
| 2026-01-01 | January | Anniversary (National Day) | Brunei: Independence from the UK (1984) |
| 2026-01-04 | January | Anniversary (National Day) | Burma: Independence Day (1948) |
| 2026-01-04 | January | International Observance | World Braille Day |
| 2026-01-08 | January | Anniversary (National Day) | Northern Mariana Islands: Commonwealth Day (1978) |
| 2026-01-14 | January | Anniversary (National Day) | Tunisia: Revolution and Youth Day (2011) |
| 2026-01-22 | January | Anniversary (National Day) | Ukraine: 108th Anniversary of Independence Declaration |
| 2026-01-24 | January | International Observance | International Day of Education |
| 2026-01-26 | January | Anniversary (National Day) | Australia: Australia Day |
| 2026-01-26 | January | Anniversary (National Day) | Christmas Island: Australia Day |
| 2026-01-26 | January | International Observance | International Day of Clean Energy |
| 2026-01-26 | January | Anniversary (National Day) | India: Republic Day (1950) |
| 2026-01-26 | January | Anniversary (National Day) | Cocos (Keeling) Islands: Australia Day |
| 2026-01-27 | January | International Observance | Int. Day of Commemoration for Holocaust Victims |
| 2026-01-28 | January | Anniversary (Milestone) | 25 Years: Baltimore Ravens first Super Bowl title |
| 2026-01-28 | January | Anniversary (Spaceflight Safety) | 40 Years: Space Shuttle Challenger Disaster (1986) |
| 2026-01-31 | January | Anniversary (National Day) | Nauru: Independence Day (1968) |
