Amy Johnston ("née" Leslie, d. 1925) was a British medievalist specialising in the history of the Northern Isles who served on the board of the Viking Society for Northern Research for 23 years.
A member of the Viking Society since 1894, Amy Leslie served as its Hon. Convener in 1901–4, Hon. Secretary in 1904–24, and Hon. Editor of "Saga-Book" and "Year Book" 1914–25. In 1902 she portrayed Auðr Vésteinsdóttir in a Society reading of "Gísla saga".
In September 1905 she married architect Alfred Wintle Johnston. She and her husband were editors of the Society’s series "Old-Lore Miscellany", producing eight volumes between 1907 and 1920. They also edited short series of "Orkney and Shetland Records" and "Caithness and Sunderland Records".
Amy died in 1925.