| Years |
|---|
| Millennium |
| 2nd millennium |
| Centuries |
| Decades |
| Years |
| Gregorian calendar | 1582 MDLXXXII |
|---|---|
| Ab urbe condita | 2335 |
| Armenian calendar | 1031 ԹՎ ՌԼԱ |
| Assyrian calendar | 6332 |
| Balinese saka calendar | 1503–1504 |
| Bengali calendar | 988–989 |
| Berber calendar | 2532 |
| English Regnal year | 24 Eliz. 1 – 25 Eliz. 1 |
| Buddhist calendar | 2126 |
| Burmese calendar | 944 |
| Byzantine calendar | 7090–7091 |
| Chinese calendar | 辛巳年 (Metal Snake) 4279 or 4072 — to — 壬午年 (Water Horse) 4280 or 4073 |
| Coptic calendar | 1298–1299 |
| Discordian calendar | 2748 |
| Ethiopian calendar | 1574–1575 |
| Hebrew calendar | 5342–5343 |
| Hindu calendars | |
| - Vikram Samvat | 1638–1639 |
| - Shaka Samvat | 1503–1504 |
| - Kali Yuga | 4682–4683 |
| Holocene calendar | 11582 |
| Igbo calendar | 582–583 |
| Iranian calendar | 960–961 |
| Islamic calendar | 989–990 |
| Japanese calendar | Tenshō 10 (天正10年) |
| Javanese calendar | 1501–1502 |
| Julian calendar | Gregorian minus 10 days |
| Korean calendar | 3915 |
| Minguo calendar | 330 before ROC 民前330年 |
| Nanakshahi calendar | 114 |
| Thai solar calendar | 2124–2125 |
| Tibetan calendar | ལྕགས་མོ་སྦྲུལ་ལོ་ (female Iron-Snake) 1708 or 1327 or 555 — to — ཆུ་ཕོ་རྟ་ལོ་ (male Water-Horse) 1709 or 1328 or 556 |


1582 (MDLXXXII) was a common year starting on Monday in the Julian calendar, and a common year starting on Friday (link will display full calendar) of the Proleptic Gregorian calendar. This year saw the beginning of the Gregorian calendar switch, when the papal bull Inter gravissimas introduced the Gregorian calendar, adopted by Spain, Portugal, the Polish–Lithuanian Commonwealth and most of present-day Italy from the start. In these countries, the year continued as normal through Thursday, October 4; the next day became Friday, October 15, like a common year starting on Friday. France followed two months later, letting Sunday, December 9 be followed by Monday, December 20. Other countries continued using the Julian calendar, switching calendars in later years, and the complete conversion to the Gregorian calendar was not entirely done until 1923.






