Otta Flora MacDonald Lois Swire, née Tarn, (1898 - 1973) was a Scottish author. She published Skye: the Island and Its Legends in 1952, a collection of fireside stories she had heard from her mother and her grandmother at Orbost House, in the Isle of Skye, Scotland. Her work was drawn from and referenced by many writers, from specialists to popular authors, such as Neil Gaiman.
She was the mother of the medical practitioner and Lockerbie Bombing campaigner, Dr. Jim Swire.