Jonathan Trumbull, American colonel and politician, 16th Governor of Connecticut (died 1785)

Jonathan Trumbull Sr. was an American politician who served as the governor of Connecticut during the American Revolution. Trumbull and Nicholas Cooke of Rhode Island were the only men to serve as governor of both a British colony and a U.S. state, and he was the only governor to take up the Patriot cause at the start of the Revolutionary War. Trumbull College at Yale University, the town of Trumbull, Connecticut, Trumbull County, Ohio, and Jonathan the Husky are all named for him. Trumbull was the father of John Trumbull, the noted artist, and Jonathan Trumbull Jr., Governor of Connecticut and Speaker of the United States House of Representatives.

The governor of Connecticut is the head of government of Connecticut, and the commander-in-chief of the state's military forces. The governor has a duty to enforce state laws, and the power to either approve or veto bills passed by the Connecticut General Assembly and to convene the legislature. Unusual among governors, the governor of Connecticut has no power to pardon. The governor of Connecticut is automatically a member of the state's Bonding Commission. He is an ex-officio member of the board of trustees of the University of Connecticut and Yale University.