1520
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1520 by topic | 
|---|
| Arts and science | 
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Works category | 
| 
 | 
| Gregorian calendar | 1520 MDXX | 
| Ab urbe condita | 2273 | 
| Armenian calendar | 969 ԹՎ ՋԿԹ | 
| Assyrian calendar | 6270 | 
| Balinese saka calendar | 1441–1442 | 
| Bengali calendar | 926–927 | 
| Berber calendar | 2470 | 
| English Regnal year | 11 Hen. 8 – 12 Hen. 8 | 
| Buddhist calendar | 2064 | 
| Burmese calendar | 882 | 
| Byzantine calendar | 7028–7029 | 
| Chinese calendar | 己卯年 (Earth Rabbit) 4217 or 4010 — to — 庚辰年 (Metal Dragon) 4218 or 4011 | 
| Coptic calendar | 1236–1237 | 
| Discordian calendar | 2686 | 
| Ethiopian calendar | 1512–1513 | 
| Hebrew calendar | 5280–5281 | 
| Hindu calendars | |
| - Vikram Samvat | 1576–1577 | 
| - Shaka Samvat | 1441–1442 | 
| - Kali Yuga | 4620–4621 | 
| Holocene calendar | 11520 | 
| Igbo calendar | 520–521 | 
| Iranian calendar | 898–899 | 
| Islamic calendar | 926–927 | 
| Japanese calendar | Eishō 17 (永正17年) | 
| Javanese calendar | 1437–1438 | 
| Julian calendar | 1520 MDXX | 
| Korean calendar | 3853 | 
| Minguo calendar | 392 before ROC 民前392年 | 
| Nanakshahi calendar | 52 | 
| Thai solar calendar | 2062–2063 | 
| Tibetan calendar | 阴土兔年 (female Earth-Rabbit) 1646 or 1265 or 493 — to — 阳金龙年 (male Iron-Dragon) 1647 or 1266 or 494 | 
Year 1520 (MDXX) was a leap year starting on Sunday of the Julian calendar.