Back 1900 Abkhazian 1900 Afrikaans 1900 ALS 1900 јыл ALT 1900 እ.ኤ.አ. Amharic 1900 AN 1900 Arabic 1900 ARY 1900 ARZ 1900 AST
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 18th century – 19th century – 20th century |
| Decades: | 1870s 1880s 1890s – 1900s – 1910s 1920s 1930s |
| Years: | 1897 1898 1899 – 1900 – 1901 1902 1903 |
| Gregorian calendar | 1900 MCM |
| Ab urbe condita | 2653 |
| Armenian calendar | 1349 ԹՎ ՌՅԽԹ |
| Assyrian calendar | 6650 |
| Bahá'í calendar | 56–57 |
| Balinese saka calendar | 1821–1822 |
| Bengali calendar | 1307 |
| Berber calendar | 2850 |
| British Regnal year | 63 Vict. 1 – 64 Vict. 1 |
| Buddhist calendar | 2444 |
| Burmese calendar | 1262 |
| Byzantine calendar | 7408–7409 |
| Chinese calendar | 己亥年 (Earth Pig) 4596 or 4536 — to — 庚子年 (Metal Rat) 4597 or 4537 |
| Coptic calendar | 1616–1617 |
| Discordian calendar | 3066 |
| Ethiopian calendar | 1892–1893 |
| Hebrew calendar | 5660–5661 |
| Hindu calendars | |
| - Vikram Samvat | 1956–1957 |
| - Shaka Samvat | 1821–1822 |
| - Kali Yuga | 5000–5001 |
| Holocene calendar | 11900 |
| Igbo calendar | 900–901 |
| Iranian calendar | 1278–1279 |
| Islamic calendar | 1317–1318 |
| Japanese calendar | Meiji 33 (明治３３年) |
| Javanese calendar | 1829–1830 |
| Julian calendar | Gregorian minus 12 or 13 days |
| Korean calendar | 4233 |
| Minguo calendar | 12 before ROC 民前12年 |
| Nanakshahi calendar | 432 |
| Thai solar calendar | 2442–2443 |
| Tibetan calendar | 阴土猪年 (female Earth-Pig) 2026 or 1645 or 873 — to — 阳金鼠年 (male Iron-Rat) 2027 or 1646 or 874 |
1900 (MCM) was an exceptional common year starting on Monday in the Gregorian calendar and a leap year starting on Saturday in the Julian calendar. It was last year of the 19th century. The Gregorian calendar was 12 days ahead of the Julian calendar as of the start of the year. The year 1900 was also the year of the rat on the Chinese calendar.