Samuel Liljeblad (20 December 1761, Mösjöholt, Södra Vi, Kalmar län – 1 April 1815, Uppsala) was a Swedish botanist and economist. At school in Vimmerby and at Linköping's Gymnasium, Liljeblad studied natural history. He became an avid plant collector encouraged by, among others, a physician in Linköping, Johan Otto Hagström (1716–1792), who was one of the Apostles of Linnaeus. Liljeblad matriculated in 1782 at Uppsala University, majored in economics, and graduated there with a master's degree in 1788. (In Uppsala University's Faculty of Philosophy, economics was the closest match to botany.)