1801
Aspetto
| 1801 in altris calendaris | |
| Calendari gregorian | 1801 |
| Ab urbe condita | 2554 |
| Calendari armen | 1250 |
| Calendari cinês | 4497 — 4498 |
| Calendari ebraic | 5560 — 5561 |
| Calendari hindu - Vikram Samvat - Shaka Samvat - Kali Yuga |
1856 — 1857 1723 — 1724 4902 — 4903 |
| Calendari iranian | 1179 — 1180 |
| Calendari islamic | 1221 — 1222 |
| Calendari runic | 2051 |
| 1801 in altris calendaris | |
| Calendari gregorian | 1801 |
| Ab urbe condita | 2554 |
| Calendari armen | 1250 |
| Calendari cinês | 4497 — 4498 |
| Calendari ebraic | 5560 — 5561 |
| Calendari hindu - Vikram Samvat - Shaka Samvat - Kali Yuga |
1856 — 1857 1723 — 1724 4902 — 4903 |
| Calendari iranian | 1179 — 1180 |
| Calendari islamic | 1221 — 1222 |
| Calendari runic | 2051 |
Il 1801 (MDCCCI par numars romans) al è un an dal secul XIX.