1455

Other calendars
 Buddhist calendar: 1997 - 1998
 Hebrew calendar: 5215 - 5216
 Islamic calendar: 859 - 860

 Events 
 February 9 – Wars of the Roses: Richard, Duke of York dismissed as Protector
 February 23 – Johannes Gutenberg prints the first Bible on a printing press
 May 22 – Wars of the Roses: First Battle of St Albans – Richard, Duke of York and his ally, Richard Neville, Earl of Warwick defeat the Lancastrians under Edmund Beaufort, 2nd Duke of Somerset, who is killed. York captures King Henry VI of England and has himself appointed Constable of England.
 May 25 – Victorious Yorkish lords ritually renew the monarchy of Henry VI in St. Paul's Cathedral.