Samuel Bogart (2 April 1797 – 11 March 1861) was an itinerant Methodist minister and militia captain from Ray County, Missouri who played a prominent role in the 1838 Missouri Mormon War before later moving to Collin County, Texas, where he became a Texas Ranger and a member of the Texas State Legislature. He is best remembered, however, for his role in leading opposition to Mormon settlers in northwestern Missouri, and for the active role he took in operations against them in the fall of 1838. These operations led to the expulsion of nearly all Mormons from the state following the issuance of Governor Lilburn Boggs' infamous Extermination Order in October of that year.