| Ippodromo di Costantinopoli | Hippodrome of Constantinople |
| ippoglosso | halibut |
| Ippogrifo | Hippogrif |
| Ippolita | Hippolyta |
| Ippolito | Hippolytus |
| Ippolito e Aricia | Hippolyte et Aricie |
| Ippolito Rosellini | Ippolito Rosellini |
| Ippomedonte | Hippomedon |
| Ippona | Hippo Regius |
| Ipponatte | Hipponax |
| ippopotamo | hippopotamus |
| Ippostrato | Hippostratos |
| Ippotoo | Hippothoon |
| Iprite | Sulfur mustard |
| Ipsach | Ipsach |
| Ipsaritmia | Hypsarrhythmia |
| IPsec | IPsec |
| Ipsheim | Ipsheim |
| ipsilon | upsilon |
| Ipsipile | Hypsipyle |
| Ipswich | Ipswich |
| IPTV | IPTV |
| IPU | IPU |
| IQ | IQ |
| Iqaluit | Iqaluit |
| Iquique | Iquique |
| IR | IR |
| ira | furor |
| Ira Levin | Ira Levin |
| irachena | Iraqi |
| iracheno | Iraqi |
| iracondo | short-tempered |
| Iragna | Iragna |
| Irahovec | Irahovec |
| Irak | Iraq |
| irakeno | Iraqi |
| Iran | Iran |
| Irancy | Irancy |
| Irangate | Iran-Contra Affair |
| iraniana | Iranian |
