Sebastián Kindelán y O'Regan, colonial governor of East Florida, Santo Domingo and Cuba (born 1757)

Sebastian Kindelán y O'Regan, also called Sebastián de Kindelán y Oregón, was a colonel in the Spanish Army who served as governor of East Florida and of Santo Domingo during the Second Spanish period (1818–1821), as well as provisional governor of Cuba (1822–1823).

East Florida was a colony of Great Britain from 1763 to 1783 and a province of the Spanish Empire from 1783 to 1821. The British gained control over Spanish Florida in 1763 as part of the Treaty of Paris that ended the Seven Years' War. Deciding that the colony was too large to administer as a single unit, British officials divided Florida into two colonies separated by the Apalachicola River: the colony of East Florida, with its capital located in St. Augustine; and West Florida, with its capital located in Pensacola. East Florida was much larger and comprised the bulk of the former Spanish colony and most of the current state of Florida. It had also been the most populated region of Spanish Florida, but before control was transferred to Britain, most residents – including virtually everyone in St. Augustine – left the territory, with most migrating to Cuba.

The Captaincy General of Santo Domingo was the first Captaincy in the New World, established by Spain in 1492 on the island of Hispaniola. The Captaincy, under the jurisdiction of the Real Audiencia of Santo Domingo, was granted administrative powers over the Spanish possessions in the Caribbean and most of its mainland coasts, making Santo Domingo the principal political entity of the early colonial period.

May 4 is the 124th day of the year in the Gregorian calendar; 241 days remain until the end of the year.