The taxon authority Schmidt may refer to:

• Adolf Schmidt (1856–1923). German entomologist
• Adolf Wilhelm Ferdinand Schmidt (1812–1899, A.W.F.Schmidt), German naturalist
• Adolph Johann Schmidt (1806–1889), German malacologist
• Albert Schmidt (Alb.Schmidt). lichenologist
• Alexander Friedrich Wolfgang Schmidt (born 1932, A.F.W.Schmidt), lichenologist
• B. Christian Schmidt (B.C. Schmidt), Canadian entomologist
• C. Schmidt, entomologist
• Carl Friedrich Schmidt (1811–1890, C.F.Schmidt), German botanist
• Christian Schmidt, carcinologist
• Constantin Schmidt, entomologist
• Daniel James Schmidt, arachnologist
• Dieter Schmidt, herpetologist
• Edmund Schmidt, entomologist
• Erich Schmidt (1890–1969), German entomologist
• Ernst Johannes Schmidt (1877–1933), Danish zoologist
• Evan R. Schmidt, entomologist
• Franz Wilibald Schmidt (1764–1796, F.W.Schmidt), botanist
• Friedrich Schmidt (1832–1908, F.Schmidt), botanist
• Gerald D. Schmidt (1934–1990), U.S. parasitologist
• Günter Schmidt, German arachnologist
• Hans Thomsen Schmidt, Danish entomologist
• Joachim Schmidt, entomologist
• Johann Anton Schmidt (1823–1905, J.A.Schmidt), botanist
• Johann Carl Schmidt (1793–1850, J.C.Schmidt), German mycologist
• Johannes Schmidt (1877–1933) botanist
• Jürgen Schmidt, ichthyologist
• Karl-Heinz Schmidt, acarologist
• Karl Patterson Schmidt (1890–1957), U.S. herpetologist
• Kathleen Schmidt, entomologist
• Martin Schmidt, entomologist
• Olga Schmidt, German entomologist
• Oscar Schmidt (1823–1886), German zoologist
• Otto Christian Schmidt (1900–1951, O.C.Schmidt), botanist
• Paul Schmidt (1846–?, P.Schmidt), phycologist
• Peter Schmidt (P. J. Schmidt / P. Yu. Schmidt), marine biologist
• Philipp Schmidt, German herpetologist
• Ray C. Schmidt, ichthyologist
• Robet E. Schmidt, annelidologist
• Stefan Schmidt, entomologist
• Wilhelm Ludwig Ewald Schmidt (1805–1843, W.L.E.Schmidt), German botanist and entomologist
• William E. Schmidt, phycologist
• Wolfgang Schmidt (Wolfg.Schmidt), botanist