1304
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1304 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1304 in poetry | 
| Gregorian calendar | 1304 MCCCIV | 
| Ab urbe condita | 2057 | 
| Armenian calendar | 753 ԹՎ ՉԾԳ | 
| Assyrian calendar | 6054 | 
| Balinese saka calendar | 1225–1226 | 
| Bengali calendar | 710–711 | 
| Berber calendar | 2254 | 
| English Regnal year | 32 Edw. 1 – 33 Edw. 1 | 
| Buddhist calendar | 1848 | 
| Burmese calendar | 666 | 
| Byzantine calendar | 6812–6813 | 
| Chinese calendar | 癸卯年 (Water Rabbit) 4001 or 3794 — to — 甲辰年 (Wood Dragon) 4002 or 3795 | 
| Coptic calendar | 1020–1021 | 
| Discordian calendar | 2470 | 
| Ethiopian calendar | 1296–1297 | 
| Hebrew calendar | 5064–5065 | 
| Hindu calendars | |
| - Vikram Samvat | 1360–1361 | 
| - Shaka Samvat | 1225–1226 | 
| - Kali Yuga | 4404–4405 | 
| Holocene calendar | 11304 | 
| Igbo calendar | 304–305 | 
| Iranian calendar | 682–683 | 
| Islamic calendar | 703–704 | 
| Japanese calendar | Kagen 2 (嘉元2年) | 
| Javanese calendar | 1215–1216 | 
| Julian calendar | 1304 MCCCIV | 
| Korean calendar | 3637 | 
| Minguo calendar | 608 before ROC 民前608年 | 
| Nanakshahi calendar | −164 | 
| Thai solar calendar | 1846–1847 | 
| Tibetan calendar | 阴水兔年 (female Water-Rabbit) 1430 or 1049 or 277 — to — 阳木龙年 (male Wood-Dragon) 1431 or 1050 or 278 | 
Year 1304 (MCCCIV) was a leap year starting on Wednesday of the Julian calendar.