The genus name Grant may refer to:

• Grant (Alienopteridae), genus of Cretaceous insects

The taxon authority Grant may refer to:

• Adele Gerard Lewis Grant (1881-1969; A.L.Grant), American botanist
• Alva Day Grant (born 1920; A.D.Grant), botanist
• Bartle Grant (1856–1924; B.Grant), botanist
• Chapman Grant (1887–1983), U.S. herpetologist
• Claude Henry Baxter Grant (1878–1958), ornithologist
• Elizabeth Grant (E.Grant), botanist
• Harold J. Grant, Jr., U.S. entomologist
• James Grant (1722–1833), Scottish naval officer, explorer and zoologist
• John Grant, naturalist
• Jason Randall Grant (born 1969; J.R.Grant), botanist
• Lauryne J. Grant, Australian helminthologist
• Martin Lawrence Grant (1907-1968; M.L.Grant), botanist
• Ralph Grant, cnidariologist
• Richard E. Grant (1927–1995), U.S. paleontologist
• Robert Edmond Grant (1793–1874), British zoologist and marine biologist
• Steven Grant, ichthyologist
• T.A. Grant, entomologist
• Taran Grant, U.S. herpetologist and computational zoologist
• Verne Edwin Grant (born 1917; V.E.Grant), botanist
• William M. Grant, U.S. paleontologist
• William Frederick Grant (1924–2011; W.F.Grant), Canadian botanist