Rigdon is an unincorporated community in Grant and Madison counties, Indiana, United States.
Rigdon was named for Dr. Pryor Rigdon, a local resident. The community had a post office between 1855 and 1912.
Rigdon is located on the Grant and Madison County line. It sits at the quadripoint of four townships: Green and Liberty townships in Grant County, comprising the northern half of the community, and Duck Creek and Boone townships in Madison County, covering the southern half of the community.