1448 (MCDXLVIII) was a leap year starting on Monday of the Julian calendar, the 1448th year of the Common Era (CE) and Anno Domini (AD) designations, the 448th year of the 2nd millennium, the 48th year of the 15th century, and the 9th year of the 1440s decade. As of the start of 1448, the Gregorian calendar was 9 days ahead of the Julian calendar, which was the dominant calendar of the time.
| Gregorian calendar | 1448 MCDXLVIII |
| Ab urbe condita | 2201 |
| Armenian calendar | 897 ԹՎ ՊՂԷ |
| Assyrian calendar | 6198 |
| Balinese saka calendar | 1369–1370 |
| Bengali calendar | 855 |
| Berber calendar | 2398 |
| English Regnal year | 26 Hen. 6 – 27 Hen. 6 |
| Buddhist calendar | 1992 |
| Burmese calendar | 810 |
| Byzantine calendar | 6956–6957 |
| Chinese calendar | 丁卯年 (Fire Rabbit) 4144 or 4084 — to — 戊辰年 (Earth Dragon) 4145 or 4085 |
| Coptic calendar | 1164–1165 |
| Discordian calendar | 2614 |
| Ethiopian calendar | 1440–1441 |
| Hebrew calendar | 5208–5209 |
| Hindu calendars | |
| - Vikram Samvat | 1504–1505 |
| - Shaka Samvat | 1369–1370 |
| - Kali Yuga | 4548–4549 |
| Holocene calendar | 11448 |
| Igbo calendar | 448–449 |
| Iranian calendar | 826–827 |
| Islamic calendar | 851–852 |
| Japanese calendar | Bun'an 5 (文安５年) |
| Javanese calendar | 1363–1364 |
| Julian calendar | 1448 MCDXLVIII |
| Korean calendar | 3781 |
| Minguo calendar | 464 before ROC 民前464年 |
| Nanakshahi calendar | −20 |
| Thai solar calendar | 1990–1991 |
| Tibetan calendar | མེ་མོ་ཡོས་ལོ་ (female Fire-Hare) 1574 or 1193 or 421 — to — ས་ཕོ་འབྲུག་ལོ་ (male Earth-Dragon) 1575 or 1194 or 422 |
Events of 1448
change- January 5/ 6 – Christopher of Bavaria, King of Denmark, Norway and Sweden dies with no designated heir, leaving all three kingdoms with vacant thrones. Brothers Bengt Jönsson Oxenstierna and Nils Jönsson Oxenstierna are selected to serve as co-regents of Sweden.
- June 20 – The Regency period of Sweden ends with the election of Karl Knutsson Bonde as King Charles VIII of Sweden.
- June 28 – Charles VIII of Sweden is publicly hailed as king at Mora Stones.
- September 28 – Christian of Oldenburg, betrothed to Queen Dowager Dorothea of Brandenburg, becomes King Christian I of Denmark.
- October 17 – Battle of Kosovo – Hungarian forces under John Hunyadi are defeated by the Turks due to the treachery of Prince Dan of Wallachia and George Brankovic of Serbia.
- Queens' College, Cambridge founded by Margaret of Anjou.
- Vatican Library founded by Pope Nicholas V.
- Vlad III the Impaler becomes reigning Prince of Wallachia for two months before being deposed by Vladislav II.
- After a long episode of drought, flood, locust infestation, and famine in Ming Dynasty China since the year 1434, these natural afflicitions finally wane and agriculture and commerce return to a state of normalcy.
Births
change- November 4 – King Alphonso II of Naples (died 1495)
- date unknown
- Baeda Maryam of Ethiopia (died 1478)
- Nicholas I, Duke of Lorraine (died 1473)
Deaths
change- January 6 – Christopher of Bavaria, King of Denmark, Norway and Sweden (born 1418)
- September 23 – Adolph I, Duke of Cleves (born 1373)
- October 31 – John VIII Palaeologus, Byzantine Emperor (born 1390)
- date unknown – Zhu Quan, Prince of Ning, Chinese general (born 1391)