The Charter Oak is the oak tree said to have hidden the charter of the Connecticut Colony.
Charter Oak may also refer to: The Charter Oak Bridge, named for the tree, which carries U.S. Highway 5 and Connecticut State Route 15 over the Connecticut River Charter Oak State College, a Connecticut public college offering distance education courses American schooner Charter Oak, a schooner and cargo ship out of Boston used in the American Civil War, captured by Confederate forces and burned in 1864 Places Charter Oak, California, United States Charter Oak, Iowa, United States Charter Oak, Missouri, United States