| iodin | iode |
| iodine | iode |
| iodize | ioder |
| Ioffe Physico-Technical Institute | Institut physico-technique Ioffe |
| Iolanda Balaş | Iolanda Balaş |
| Iolanta | Yolande |
| Iolaus | Iolaos |
| Iolcos | Iolcos |
| Iole | Iole |
| Iolo Morganwg | Iolo Morganwg |
| Iomega Zip drive | Disque zip |
| ion | ion |
| Ion Andoni Goikoetxea | Jon Andoni Goikoetxea |
| Ion Antonescu | Ion Antonescu |
| Ion Brătianu | Ion Brătianu |
| Ion cannon | Canon à ions |
| Ion channel | Canal ionique |
| Ion composition | Composition ionique |
| Ion Creangă | Ion Creangă |
| Ion density | Densite ionique |
| Ion Dragoumis | Ion Dragoumis |
| ion exchange | échange d'ions |
| ion exchanger | échangeur d'ions |
| Ion Gheorghe Maurer | Ion Gheorghe Maurer |
| Ion Ghica | Ion Ghica |
| Ion Iliescu | Ion Iliescu |
| Ion Mihai Pacepa | Ion Mihai Pacepa |
| Ion plasma waves | Onde dans les plasmas ionique |
| Ion temperature | Temperature ionique |
| Ion thruster | Moteur ionique |
| Iona | Iona |
| Iona Nikitchenko | Iona Nikitchenko |
| Ionela Târlea-Manolache | Ionela Târlea-Manolache |
| Ionia | Ionie |
| Ionian | Ionien |
| Ionian Academy | Académie ionienne |
| Ionian Islands | Îles ioniennes |
| Ionian School | École milésienne |
| Ionian Sea | Mer Ionienne |
| Ionian University | Université Ionienne |
| Ionians | Ion |
| ionic | ionique |
| Ionic bond | Liaison ionique |
| Ionic crystal | Cristal ionique |
| Ionic liquid | Liquide ionique |
| Ionic radius | Rayon ionique |
| Ionikos FC | Ionikos Le Pirée |
| ionising radiation | rayonnement ionisant |
| ionize | ioniser |
| Ionized gases | Gaz ionise |
| Ionizing shock waves | Onde de choc ionisante |
| Ionocraft | Propulsion électrocinétique |
| Ionone | Ionone |
| ionosphere | ionosphère |
| Ionospheric scintillation | Scintillation ionospherique |
| Iora | Aegithinidae |
| IORE | Bombardier IORE |
| IOS | Ios |
| Ios Island | Ios |
| Iosef Stalin tank | Char Iosef Stalin |
| Iosif Grigulevich | Iossif Grigoulevitch |
| Iosif Shklovsky | Iosef Shklovski |
| Iosif Stalin tank | Char Iosef Stalin |
