Dorothy Renton (7 April 1898 – 28 January 1966) was a gardener. Along with her husband, John Renton, they developed from 1925 three rock gardens linked to Branlyn, a house they built above the banks of the River Tay in Scotland. They were founder members of the Alpine Garden Society and Scottish Rock Garden Club. Dorothy grew most of her plants from seeds collected mainly from Tibet, Bhutan and China, from expeditions led by Joseph Rock (her pink-barked birch from Rock’s travels in south-west China won her an international reputation), George Forrest and others. She won the Scottish Rock Garden Club Forrest medal four times. Renton was also a pioneer of peat-wall planting, making it possible for her to grow dwarf acid-loving plants.