An Autobiography is the title of the recollections of crime writer Agatha Christie published posthumously by Collins in the UK and by Dodd, Mead & Company in the US in November 1977, almost two years after the writer's death in January 1976. The UK edition retailed at £7.95 and the US edition at $15.00. It is by some considerable margin the longest of her works, the UK first edition running to 544 pages. It was translated and published in Greek, Italian, Polish, Portuguese, Hungarian and Spanish.

Colonel Archibald Christie was a British businessman and military officer. He was the first husband of mystery writer Dame Agatha Christie; they married in 1914 and divorced in 1928. They separated in 1927 after a major rift due to his infidelity and obtained a divorce the following year. During that period Agatha wrote some of her most renowned detective novels. Shortly after the divorce, Christie married Nancy Neele, and the couple lived quietly for the rest of their lives. Christie became a successful businessman and was invited to be on the board of directors of several major companies.