| Millennium: | 2nd millennium | 
|---|---|
| Centuries: | |
| Decades: | |
| Years: | 
| 1456 by topic | 
|---|
| Arts and science | 
| Architecture - Art | 
| Leaders | 
| Political entities - State leaders - Colonial governors - Religious leaders | 
| Birth and death categories | 
| Births - Deaths | 
| Establishments and disestablishments categories | 
| Establishments - Disestablishments | 
| Art and literature | 
| 1456 in poetry | 
| Gregorian calendar | 1456 MCDLVI | 
| Ab urbe condita | 2209 | 
| Armenian calendar | 905 ԹՎ ՋԵ | 
| Assyrian calendar | 6206 | 
| Bengali calendar | 863 | 
| Berber calendar | 2406 | 
| English Regnal year | 34 Hen. 6 – 35 Hen. 6 | 
| Buddhist calendar | 2000 | 
| Burmese calendar | 818 | 
| Byzantine calendar | 6964–6965 | 
| Chinese calendar | 乙亥年 (Wood Pig) 4152 or 4092 — to — 丙子年 (Fire Rat) 4153 or 4093 | 
| Coptic calendar | 1172–1173 | 
| Discordian calendar | 2622 | 
| Ethiopian calendar | 1448–1449 | 
| Hebrew calendar | 5216–5217 | 
| Hindu calendars | |
| - Vikram Samvat | 1512–1513 | 
| - Shaka Samvat | 1377–1378 | 
| - Kali Yuga | 4556–4557 | 
| Holocene calendar | 11456 | 
| Igbo calendar | 456–457 | 
| Iranian calendar | 834–835 | 
| Islamic calendar | 860–861 | 
| Japanese calendar | Kōshō 2 (康正2年) | 
| Javanese calendar | 1371–1372 | 
| Julian calendar | 1456 MCDLVI | 
| Korean calendar | 3789 | 
| Minguo calendar | 456 before ROC 民前456年 | 
| Nanakshahi calendar | −12 | 
| Thai solar calendar | 1998–1999 | 
Year 1456 (MCDLVI) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar.