| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1901 by topic |
|---|
| Subject |
| By country |
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 1901 MCMI |
| Ab urbe condita | 2654 |
| Armenian calendar | 1350 ԹՎ ՌՅԾ |
| Assyrian calendar | 6651 |
| Baháʼí calendar | 57–58 |
| Balinese saka calendar | 1822–1823 |
| Bengali calendar | 1308 |
| Berber calendar | 2851 |
| British Regnal year | 64 Vict. 1 – 1 Edw. 7 |
| Buddhist calendar | 2445 |
| Burmese calendar | 1263 |
| Byzantine calendar | 7409–7410 |
| Chinese calendar | 庚子年 (Metal Rat) 4598 or 4391 — to — 辛丑年 (Metal Ox) 4599 or 4392 |
| Coptic calendar | 1617–1618 |
| Discordian calendar | 3067 |
| Ethiopian calendar | 1893–1894 |
| Hebrew calendar | 5661–5662 |
| Hindu calendars | |
| - Vikram Samvat | 1957–1958 |
| - Shaka Samvat | 1822–1823 |
| - Kali Yuga | 5001–5002 |
| Holocene calendar | 11901 |
| Igbo calendar | 901–902 |
| Iranian calendar | 1279–1280 |
| Islamic calendar | 1318–1319 |
| Japanese calendar | Meiji 34 (明治３４年) |
| Javanese calendar | 1830–1831 |
| Julian calendar | Gregorian minus 13 days |
| Korean calendar | 4234 |
| Minguo calendar | 11 before ROC 民前11年 |
| Nanakshahi calendar | 433 |
| Thai solar calendar | 2443–2444 |
| Tibetan calendar | 阳金鼠年 (male Iron-Rat) 2027 or 1646 or 874 — to — 阴金牛年 (female Iron-Ox) 2028 or 1647 or 875 |
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1901 (MCMI) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Monday of the Julian calendar, the 1901st year of the Common Era (CE) and Anno Domini (AD) designations, the 901st year of the 2nd millennium, the 1st year of the 20th century, and the 2nd year of the 1900s decade. As of the start of 1901, the Gregorian calendar was 13 days ahead of the Julian calendar, which remained in localized use until 1923.