East Florida is a colony of Great Britain from 1763–1783 and of Spain from 1783–1822.

East Florida is established by the British colonial government in 1763; as its name implies, it consistes of the eastern part of the region of Florida, with West Florida comprising the western parts.

Its capital is St. Augustine, which had been the capital of Spanish Florida.Britain forms East and West Florida out of territory it has received from Spain and France following the French and Indian War (the Seven Years' War).

Finding its new acquisitions in the southeast too large to administer as a single unit, the British divide them into two colonies separated by the Apalachicola River.

East Florida comprises the bulk of what had previously been the Spanish colony of Florida.

Britain cedes both Floridas back to Spain following the American Revolutionary War, and Spain maintains them as separate colonies, though the majority of West Florida is gradually annexed by the United States.

Spain cedes East Florida and the remainder of West Florida to the U.S. in the Adams-Onís Treaty; the United States organizes them as a single unit, the Florida Territory.