John Ker (1789–1850) was an American surgeon, planter, and politician in Louisiana. Together with several major Mississippi planters, in the 1830s Ker co-founded the Mississippi Colonization Society, promoting the removal of free people of color to a colony in West Africa. The society modeled itself after the American Colonization Society, the national organization for which Ker later served as a vice president.
- Occupation
- politician
- Position held
- member of the State Senate of Louisiana
- Citizenship
- United States
- Born
- June 27, 1789
- Died
