| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 901 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 901 CMI |
| Ab urbe condita | 1654 |
| Armenian calendar | 350 ԹՎ ՅԾ |
| Assyrian calendar | 5651 |
| Balinese saka calendar | 822–823 |
| Bengali calendar | 308 |
| Berber calendar | 1851 |
| Buddhist calendar | 1445 |
| Burmese calendar | 263 |
| Byzantine calendar | 6409–6410 |
| Chinese calendar | 庚申年 (Metal Monkey) 3598 or 3391 — to — 辛酉年 (Metal Rooster) 3599 or 3392 |
| Coptic calendar | 617–618 |
| Discordian calendar | 2067 |
| Ethiopian calendar | 893–894 |
| Hebrew calendar | 4661–4662 |
| Hindu calendars | |
| - Vikram Samvat | 957–958 |
| - Shaka Samvat | 822–823 |
| - Kali Yuga | 4001–4002 |
| Holocene calendar | 10901 |
| Iranian calendar | 279–280 |
| Islamic calendar | 288–289 |
| Japanese calendar | Shōtai 4 / Engi 1 (延喜元年) |
| Javanese calendar | 799–800 |
| Julian calendar | 901 CMI |
| Korean calendar | 3234 |
| Minguo calendar | 1011 before ROC 民前1011年 |
| Nanakshahi calendar | −567 |
| Seleucid era | 1212/1213 AG |
| Thai solar calendar | 1443–1444 |
| Tibetan calendar | 阳金猴年 (male Iron-Monkey) 1027 or 646 or −126 — to — 阴金鸡年 (female Iron-Rooster) 1028 or 647 or −125 |
Year 901 (CMI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.