Isaac Parker may refer to: Isaac C. Parker (1838–1896), also known as “Hanging Judge” Parker, American politician and jurist in Missouri and in Arkansas Isaac Parker (Massachusetts judge) (1768–1830), U.S. representative from Massachusetts Isaac T. Parker (1849–1911), American politician, lieutenant governor of Delaware Isaac Parker (Texas politician) (1793–1883), Republic of Texas and state senator, for Twenty-first Texas Legislature