- Idzik Anna
- Idzik Zuzanna
- Idzikowski Emil
- Idzior M.
- Idzior-Waluś Barbara
- Ielpo Benedetto
- Iftikhar Hussain Hafiz
- Igielska-Kalwat Joanna
- Iglesias Maite
- Iglicki Matias
- Iglik H.
- Ignacio Moraledab
- Ignaciuk A.
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- Ignacy Witold
- Ignacyk Miłosz
- Ignaczak Anna
- Ignaczuk Jan
- Ignaczuk Rafał
- Ignarska Magdalena
- Ignaszak-Szczepaniak Magdalena
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- Ignatov Atanas
- Ignatov Tanja
- Ignatova Svetlana
- Ignatowicz A.
- Ignatowicz Andrzej
- Ignatowicz Stanisław
- Ignys I.
- Ignyś I.
- Ignyś-O'Byrne A.
- Igo Jr Robert P.
- Igras Tomasz
- Igras-Kołdyj Magdalena
- Ihor Robak
- Ihring Michael
- Ijaz Amna
- Ikeda Yoko
- Ikegawa Shiro
- Ikonomidou C.
- Ikonomidou -Turski Chrysanthy
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- Ilag Leopold L.
- Ilahi I.
- Ilango Saraswathi
- İlbay Gül
- Ilczuk Tomasz
- Ilczuk Zdzisław
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- Ilic Marija
- Iliescu Iolanda
- Iliescu Iolanda Alca
- Iliev I.A.
- Iliev Yanko
- Ilieva Yana
- Ilieva Yana E.
- Ilieva Y.E.
- Ilina Natalia
- Ilir Azizi
- Iliszko M.
- Iljazovic Ermina
- Iljin Kristiina
- Ilkhamov R.A.
- Illa Miriam
- Illes Zsolt
- Illés Árpád
- Illingworth R.
- Ilosa Oscar Calderón
- Iltaf Jawaria
- Iluk Natalia
- Iłenda Mirosława
- Iłendo E.
- Iłendo Elżbieta
- Iłowiecka Katarzyna
- Iłowiecka M
- Iłżecka Joanna
- Iłżecki Marek
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- Im Seock-Ah
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- Imagawa Hiroshi
- Imai K.
- Imam Yahia Zakaria
- Imamoto Akira
- Iman Danny Moises Barrientos
- Imasz Emilia
- Imbach P.
- Imbierowicz Magdalena
- Imiela Jacek
- Imiela Tomasz
- Imieliński Brunon L.
- Immonen Kaisa
- Imrie Kevin
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- in Age-Related Macular Degeneration Study Group Autofluorescence
- in Hemodialysis Working Group [m. in.] Collaborative Depression and Sexual dysfunction (CDS)
- Inaba Kenji
- Inácio João R.
- Inaguma Shingo
- Inana George
- Inanc Nevsun
- Inasius Fany
- Inatani Masaru
- Inbal Adi
- Inborn Errors Working Party of the Society for European Blood and Marrow Transplantation and the European Society for Immune Deficiencies on behalf of the
- Incagli Francesca
- Inceoglu Bora
- Inchiappa Luca
- Indig Fred E.
- Inding Fred. E.
- Indycka Ewelina
- Indykiewicz Piotr
- Infantes M.
- Inferrera Leandro
- Influence65 study group for the
- Ing Todd
- Ingegnoli Francesca
- Ingelsson Martin
- Ingenito Concetta
- Inger M.
- Inglot Anna
- Inglot B.
- Inglot Katarzyna
- Inglot Małgorzata
- Inglot Marcin
- Inglot Tadeusz
- Ingot Tadeusz
- Ingram Wendy M.
- Ingravallo Giuseppe
- Ingvarsson Thorvaldur
- Iniguez Andres
- Inki P
- Inkster C.
- Innis Bruce L.
- Innocenti Idanna
- Inomata Naoko
- Inoue Hiroyuki
- Inoue Kenji
- Inozemcev A.N.
- Insińska-Rak Małgorzata
- International 22Q11.2 Brain, Behavior Consortium
- International Clinically Isolated Syndrome Study Group [m.in.] on behalf of the
- International University Family Medicine Club Polska Grupa Robocza
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- investigator group Improver
- Investigators Aqua
- Investigators AUSTRI
- Investigators Caspian
- Investigators Dreamm-7
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- Investigators FENICE
- Investigators ORALD
- Investigators Rationale
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- Investigators The EINSTEIN–PE
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- investigators [m. in.] UNCOVER-2 and UNCOVER-3
- Investigators [m. in.] EBBINGHAUS
- Investigators [m. in.] Einstein
- Investigators [m. in.] ENGAGE AF-TIMI 48
- Investigators [m. in.] EXAMINE
- Investigators [m. in.] Organisation to Assess Strategies for Ischemic Syndromes (OASIS-2)
- Investigators [m. in.] Pacific
- Investigators [m. in.] POET-COPD
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- Ioana Mihai
- Ioannidi Danai
- Ioannidis G.A.
- Ioannidis John P.A.
- Ioannidis Orestis
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- Ionescu Ruxandra
- Ionică Angela Monica
- Ionita-Laza Iuliana
- Iordache Sevastitia
- Iorio Caterina
- Iosava Genadi
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- Iotti C.
- Iovino Claudio
- Iovino Francesco
- Iqbal Furhan
- Iqbal Javed
- Iqbal Muhammad Javed
- Iqbal Mussawar
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- Iracka Stefania
- Irazoque-Palazuelos Fedra
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- Irfan Ali
- Irfan Muhammad
- Irfan Rana Muhammad
- Irga N.
- Irga Ninela
- Irga-Jaworska N.
- Irga-Jaworska Nina
- Irga-Jaworska Ninela
- Irga-Staniukiewicz Anna
- Iriepa Isabel
- IRIS Investigators [m.in.] The
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- Irkec Murat
- Irla-Miduch Joanna
- Irma Podolak
- Irmak Sule
- Irmejs A.
- Iros Mariano
- Irshad Asma
- Irving Andrew J.
- Irwin Colin
- Irwin Juan C.
- Irzmańska-Hudziak Anna
- Irzymańska-Hudziak Anna
- Isaat Tadeusz
- Isabel Iriepab
- Isaias Emilio Paulino Do Carmo
- Isakov Rustam
- Isamat F.
- Isaryk Sergij
- Ishai Meydan Ben
- Ishiko Satoshi
- Ishimura Norihisa
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- Ishmuratova Yu Margarita
- Isik Arda
- Isirdi Alessandro
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- Iskas Micahil
- Iskas Michalis
- Iskierka E.
- Iskierka Elżbieta
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- Iskierko Jerzy
- Iskra Ewelina
- Iskra Justyna
- Iskra Katarzyna