Margaret Isabel Johnson (née Nave; 10 January 1882 - 28 October 1993) was a verified American supercentenarian. She was born in Attica, Fountain, Indiana as the daughter of J. Shannon and Jane Isabel Rice Nave. She married Louis L. Johnson in Attica on 29 September 1904. The couple had two children: Isabel and Shannon. Margaret was a graduate from National Park Seminary, where she had studied art and music. She painted a fresco in the Fountain County Courthouse in 1940, the fresco is still there to this day. She was widowed in 1950. Margaret Johnson died in Attica (Williamsport), Indiana on 28 October 1993, aged 111 years, 291 days.