Members with the Letter I
- Ibanez, Jorge -- Mexico -- Universidad Iberoamericana-Ciudad de Mexico
- Ihalainen, Jarkko -- Finland -- United Medix Laboratories
- Ihlenfeldt, Wolf-Dietrich -- Germany -- Xemistry GmbH
- Ihm, Dae -- Korea -- Hoseo University
- Ikegami, Shiro -- Japan -- Teikyo University
- Ikizler, A. -- Turkey
- Illing, H. Paul -- United Kingdom -- Paul Illing Consultancy Services (PICS)
- Imanari, Makoto -- Japan -- Mitsubishi Chemical Corporation
- Imasaka, Totaro -- Japan -- Kyushu University
- Imhof, Robert -- United Kingdom -- South Bank University
- Imre, Zeliha -- Turkey -- Istanbul Üniversitesi
- Imre, Attila -- Hungary -- KFKI Atomic Energy Research Institute
- Inagaki, Michio -- Japan -- Aichi Institute of Technology
- Inch, Thomas -- United Kingdom
- Inczédy, János -- Hungary -- Veszprémi Egyetem
- Inel, Yuksel -- Turkey -- Bogaziçi Üniversitesi
- Infante, Gabriel -- Puerto Rico -- Universidad Metropolitana
- Infield, David -- United Kingdom -- University of Strathclyde
- Ingman, Folke -- Finland -- Royal Institute of Technology
- Ingram, Jani -- United States -- Northern Arizona University
- Innocent, Ester -- Tanzania -- Muhimbili University of Health & Allied Sciences
- Inoue, Tadashi -- Japan -- Kyoto University
- Interrante, Leonard -- United States -- Rensselaer Polytechnic Institute
- Inzelt, György -- Hungary -- Eötvös Loránd University
- Iorish, Vladimir -- Russia -- Russian Academy of Sciences
- Iqbal, Javed -- India -- University of Hyderabad
- Iqbal, Mohammad Saeed -- Pakistan -- GC University Lahore
- Isaki, Takaharu -- Japan -- Mitsui Chemicals, Inc.
- Ishida, Hitoshi -- Japan -- Kitasato University
- Ishida, Hideyuki -- Japan -- Osaka University