Back 1263 Abkhazian 1263 Afrikaans 1263 ALS 1263 እ.ኤ.አ. Amharic 1263 AN 1263 Arabic 1263 ARZ 1263 AST 1263 AVK 1263 Azerbaijani
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 12th century – 13th century – 14th century |
| Decades: | 1230s 1240s 1250s – 1260s – 1270s 1280s 1290s |
| Years: | 1260 1261 1262 – 1263 – 1264 1265 1266 |
| Gregorian calendar | 1263 MCCLXIII |
| Ab urbe condita | 2016 |
| Armenian calendar | 712 ԹՎ ՉԺԲ |
| Assyrian calendar | 6013 |
| Balinese saka calendar | 1184–1185 |
| Bengali calendar | 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) 3959 or 3899 — to — 癸亥年 (Water Pig) 3960 or 3900 |
| 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 |
1263 (MCCLXIII) was a common year starting on Monday of the Julian calendar, the 1263rd year of the Common Era (CE) and Anno Domini (AD) designations, the 263rd year of the 2nd millennium, the 63rd year of the 13th century, and the 4th year of the 1260s decade. As of the start of 1263, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.