Gertrud Dahlgren (1931–2009) was a Swedish botanist. She was born at Klippan in Scania, and after graduating from university at Helsingborg went to the University of Lund for graduate studies. There she obtained her M.Sc. in chemistry and biology. She was married to fellow botanist Rolf Dahlgren (1932–1987), who was killed in a car accident. The couple had three children, Susanna, Helena and Fredrik. She died in December 2009 at the age of 78.