List of Biologists - I

I

• Hermann von Ihering (1850–1930), German naturalist
• Johann Karl Wilhelm Illiger (1775–1813), German entomologist
• Jan Ingenhousz (1730–1799), Dutch-born British botanist
• Tom Iredale (1880–1972), English conchologist and ornithologist
• Paul Erdmann Isert (1756–1789), German botanist