| Years |
|---|
| Millennium |
| 2nd millennium |
| Centuries |
| Decades |
| Years |
| Gregorian calendar | 1273 MCCLXXIII |
| Ab urbe condita | 2026 |
| Armenian calendar | 722 ԹՎ ՉԻԲ |
| Assyrian calendar | 6023 |
| Balinese saka calendar | 1194–1195 |
| Bengali calendar | 680 |
| Berber calendar | 2223 |
| English Regnal year | 1 Edw. 1 – 2 Edw. 1 |
| Buddhist calendar | 1817 |
| Burmese calendar | 635 |
| Byzantine calendar | 6781–6782 |
| Chinese calendar | 壬申年 (Water Monkey) 3969 or 3909 — to — 癸酉年 (Water Rooster) 3970 or 3910 |
| Coptic calendar | 989–990 |
| Discordian calendar | 2439 |
| Ethiopian calendar | 1265–1266 |
| Hebrew calendar | 5033–5034 |
| Hindu calendars | |
| - Vikram Samvat | 1329–1330 |
| - Shaka Samvat | 1194–1195 |
| - Kali Yuga | 4373–4374 |
| Holocene calendar | 11273 |
| Igbo calendar | 273–274 |
| Iranian calendar | 651–652 |
| Islamic calendar | 671–672 |
| Japanese calendar | Bun'ei 10 (文永１０年) |
| Javanese calendar | 1183–1184 |
| Julian calendar | 1273 MCCLXXIII |
| Korean calendar | 3606 |
| Minguo calendar | 639 before ROC 民前639年 |
| Nanakshahi calendar | −195 |
| Thai solar calendar | 1815–1816 |
| Tibetan calendar | ཆུ་ཕོ་སྤྲེ་ལོ་ (male Water-Monkey) 1399 or 1018 or 246 — to — ཆུ་མོ་བྱ་ལོ་ (female Water-Bird) 1400 or 1019 or 247 |
1273 (MCCLXXIII) was a common year starting on Sunday of the Julian calendar, the 1273rd year of the Common Era (CE) and Anno Domini (AD) designations, the 273rd year of the 2nd millennium, the 73rd year of the 13th century, and the 4th year of the 1270s decade. As of the start of 1273, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.