John Dabney Terrell Sr. (October 14, 1775 – May 10, 1850), surveyor, planter, and politician in Alabama, was born to a planter family in Bedford County, Virginia, and died in Marion County, Alabama. He moved to the region about 1814, well before Indian Removal which began in the 1830s, and served as the United States Indian Agent to the Chickasaw under two presidents. He developed a plantation and was a slaveholder. He became active in territorial and state politics, serving as a state senator and also as a state representative.