873
| Years | 
|---|
| Millennium | 
| 1st millennium | 
| Centuries | 
| Decades | 
| Years | 
| 873 by topic | 
|---|
| Leaders | 
| Categories | 
| 
 | 
| Gregorian calendar | 873 DCCCLXXIII | 
| Ab urbe condita | 1626 | 
| Armenian calendar | 322 ԹՎ ՅԻԲ | 
| Assyrian calendar | 5623 | 
| Balinese saka calendar | 794–795 | 
| Bengali calendar | 279–280 | 
| Berber calendar | 1823 | 
| Buddhist calendar | 1417 | 
| Burmese calendar | 235 | 
| Byzantine calendar | 6381–6382 | 
| Chinese calendar | 壬辰年 (Water Dragon) 3570 or 3363 — to — 癸巳年 (Water Snake) 3571 or 3364 | 
| Coptic calendar | 589–590 | 
| Discordian calendar | 2039 | 
| Ethiopian calendar | 865–866 | 
| Hebrew calendar | 4633–4634 | 
| Hindu calendars | |
| - Vikram Samvat | 929–930 | 
| - Shaka Samvat | 794–795 | 
| - Kali Yuga | 3973–3974 | 
| Holocene calendar | 10873 | 
| Iranian calendar | 251–252 | 
| Islamic calendar | 259–260 | 
| Japanese calendar | Jōgan 15 (貞観15年) | 
| Javanese calendar | 771–772 | 
| Julian calendar | 873 DCCCLXXIII | 
| Korean calendar | 3206 | 
| Minguo calendar | 1039 before ROC 民前1039年 | 
| Nanakshahi calendar | −595 | 
| Seleucid era | 1184/1185 AG | 
| Thai solar calendar | 1415–1416 | 
| Tibetan calendar | 阳水龙年 (male Water-Dragon) 999 or 618 or −154 — to — 阴水蛇年 (female Water-Snake) 1000 or 619 or −153 | 
Year 873 (DCCCLXXIII) was a common year starting on Thursday of the Julian calendar.