1430s

The 1430s was a decade that began on 1 January 1430 and ended on 31 December 1439. It is distinct from the decade known as the 144th decade which began on January 1, 1431 and ended on December 31, 1440.

• The Treaty of Arras ends the alliance of Burgundy and England. This changes the Hundred Years' War to help France.