899
| Years | 
|---|
| Millennium | 
| 1st millennium | 
| Centuries | 
| Decades | 
| Years | 
| 899 by topic | 
|---|
| Leaders | 
| Categories | 
| 
 | 
| Gregorian calendar | 899 DCCCXCIX | 
| Ab urbe condita | 1652 | 
| Armenian calendar | 348 ԹՎ ՅԽԸ | 
| Assyrian calendar | 5649 | 
| Balinese saka calendar | 820–821 | 
| Bengali calendar | 305–306 | 
| Berber calendar | 1849 | 
| Buddhist calendar | 1443 | 
| Burmese calendar | 261 | 
| Byzantine calendar | 6407–6408 | 
| Chinese calendar | 戊午年 (Earth Horse) 3596 or 3389 — to — 己未年 (Earth Goat) 3597 or 3390 | 
| Coptic calendar | 615–616 | 
| Discordian calendar | 2065 | 
| Ethiopian calendar | 891–892 | 
| Hebrew calendar | 4659–4660 | 
| Hindu calendars | |
| - Vikram Samvat | 955–956 | 
| - Shaka Samvat | 820–821 | 
| - Kali Yuga | 3999–4000 | 
| Holocene calendar | 10899 | 
| Iranian calendar | 277–278 | 
| Islamic calendar | 285–286 | 
| Japanese calendar | Shōtai 2 (昌泰2年) | 
| Javanese calendar | 797–798 | 
| Julian calendar | 899 DCCCXCIX | 
| Korean calendar | 3232 | 
| Minguo calendar | 1013 before ROC 民前1013年 | 
| Nanakshahi calendar | −569 | 
| Seleucid era | 1210/1211 AG | 
| Thai solar calendar | 1441–1442 | 
| Tibetan calendar | 阳土马年 (male Earth-Horse) 1025 or 644 or −128 — to — 阴土羊年 (female Earth-Goat) 1026 or 645 or −127 | 
Year 899 (DCCCXCIX) was a common year starting on Monday of the Julian calendar.