1263
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1263 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1263 in poetry | 
| Gregorian calendar | 1263 MCCLXIII | 
| Ab urbe condita | 2016 | 
| Armenian calendar | 712 ԹՎ ՉԺԲ | 
| Assyrian calendar | 6013 | 
| Balinese saka calendar | 1184–1185 | 
| Bengali calendar | 669–670 | 
| Berber calendar | 2213 | 
| English Regnal year | 47 Hen. 3 – 48 Hen. 3 | 
| Buddhist calendar | 1807 | 
| Burmese calendar | 625 | 
| Byzantine calendar | 6771–6772 | 
| Chinese calendar | 壬戌年 (Water Dog) 3960 or 3753 — to — 癸亥年 (Water Pig) 3961 or 3754 | 
| Coptic calendar | 979–980 | 
| Discordian calendar | 2429 | 
| Ethiopian calendar | 1255–1256 | 
| Hebrew calendar | 5023–5024 | 
| Hindu calendars | |
| - Vikram Samvat | 1319–1320 | 
| - Shaka Samvat | 1184–1185 | 
| - Kali Yuga | 4363–4364 | 
| Holocene calendar | 11263 | 
| Igbo calendar | 263–264 | 
| Iranian calendar | 641–642 | 
| Islamic calendar | 661–662 | 
| Japanese calendar | Kōchō 3 (弘長3年) | 
| Javanese calendar | 1173–1174 | 
| Julian calendar | 1263 MCCLXIII | 
| Korean calendar | 3596 | 
| Minguo calendar | 649 before ROC 民前649年 | 
| Nanakshahi calendar | −205 | 
| Thai solar calendar | 1805–1806 | 
| Tibetan calendar | 阳水狗年 (male Water-Dog) 1389 or 1008 or 236 — to — 阴水猪年 (female Water-Pig) 1390 or 1009 or 237 | 
Year 1263 (MCCLXIII) was a common year starting on Monday of the Julian calendar.