List of colonial governors of Maryland

Maryland began as a proprietary colony of the Catholic Calvert family, the Lords Baltimore under a royal charter, and its first eight governors were appointed by them. When the Catholic King of England, James II, was overthrown in the Glorious Revolution, the Calverts lost their charter and Maryland became a royal colony. It was governed briefly by local Protestants before the arrival of the first of 12 governors appointed directly by the English crown. The royal charter was restored to the Calverts in 1715 and governors were again appointed by the Calverts through the American Revolution.

Colonial period
This list includes appointed governors, including those briefly appointed by the Cromwellian government, but excludes those who claimed themselves as governors of the colony without a formal appointment from London.