James Monroe Smith (1839 - 1915) was a millionaire planter and state legislator in Georgia, U.S. He was born near Washington, Georgia and his plantation, Smithonia, covered square miles. His property included a railroad to connect his farm with the Georgia Railroad. He served in the Georgia State Legislature's house and senate and ran for governor in 1906 but did not win. He was a bachelor. He died on his plantation near Athens, Georgia in 1915. After his death his estate was vigorously disputed.