Jenckes is a surname. Notable people with the surname include:
Joseph Jenckes (disambiguation), three prominent early New England colonists Marcien Jenckes, the chief executive officer for Voxant, Inc, a new media company in Reston, Virginia Thomas Jenckes (1818–1875), United States Congressional representative for the State of Rhode Island Virginia E. Jenckes (1877–1975), U.S. Representative from Indiana
See also E. N. Jenckes Store, historic store on Main Street in Douglas, Massachusetts Jenckes House (Old Louisquisset Pike, Lincoln, Rhode Island), historic house Jenckes Mansion, historic house at 837 Social Street, Woonsocket, Rhode Island Whipple-Jenckes House (Liberty Jenckes House), historic American Colonial house at 2500 Diamond Hill Road, Cumberland, Rhode Island Jencks (disambiguation)