| INFOFISH Intergovernmental organization for marketing information and technical advisory services for fishery products in the Asian and Pacific region
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| International Aquaculture Webring Is a webring that has been set up to link as many high quality, aquaculture related websites as possible from around the world. |
| International Council for the Exploration of the Sea (ICES) The international science organization studying and helping to safeguard North Atlantic marine ecosystems and the living resources they sustain |
| International Fishmeal and Oil Manufacturers Association (IFOMA) International Fishmeal and Oil Manufacturers Association |
| International Foundation for Science (IFS) "Is an NGO providing research grants for young scientists from developing countries to perform research in the field of ""Aquatic Resources""" |
| International Society for Salt Lake Research (ISSLR) ISSLR was founded to establish effective liaison between persons interested in any aspect of inland saline waters, to encourage these interests, and to educate the public in the scientific use, management,and conservation of salt lakes |
| International Veterinary Information Service (IVIS) A not-for-profit organization established to provide information to veterinarians, veterinary students and animal health professionals world wide. |