Martha Ann King (née Crain; 3 July 1868? - 12 December 1979) was an American woman notable for her long lifespan. She was born in Angelina, Texas on 3 July 1868 as the daughter of John Alfred and Juda Crain. The family moved to Tyler when she was a young girl. She married a man named Seck King around 1901 and never had any children. She was widowed in the 1930s and spent most of her life in Tyler County. She had a sister, Emma, who died in 1974 at the age of 104. Martha King died in Hempstead, Waller, Texas on 12 December 1979, aged 111 years, 162 days. Her case is currently unverified.