| Author Name | Profession | Nationality |
| Iain Banks | Writer | Scottish |
| Iain Glen | Actor | Scottish |
| Ian Allison | Scientist | |
| Ian Fleming | Author | British |
| Ian Gilmour | Politician | English |
| Ian Hacking | Philosopher | Canadian |
| Ian Hamilton Finlay | Poet | Scottish |
| Ian Harding | Actor | American |
| Ian Hart | Actor | English |
| Ian Jackson | Scientist | English |
| Ian St. John | Athlete | Scottish |
| Ibrahim Babangida | Statesman | Nigerian |
| Idi Amin | Statesman | |
| Ieva Laguna | Model | Latvian |
| Igor Ivanov | Statesman | Russian |
| Ilya Ehrenburg | Writer | Ukrainian |
| Immanuel Kant | Philosopher | German |
| Imran Khan | Athlete | Pakistani |
| Imre Lakatos | Philosopher | Hungarian |
| Ina Garten | Author | American |
| Indira Gandhi | Statesman | Indian |
| Indra Devi | Celebrity | Latvian |
| Ingvar Kamprad | Businessman | Swedish |
| Ira Gershwin | Musician | American |
| Ira Glass | Journalist | American |
| Ira Glasser | Activist | American |
| Iris Dement | Musician | American |
| Iris Johansen | Author | American |
| Irvin Kershner | Director | American |
| Irving Babbitt | Critic | American |
| Irving Caesar | Composer | American |
| Irving Fisher | Economist | American |
| Irving Langmuir | Scientist | American |
| Irving Layton | Poet | Canadian |
| Irving R. Kaufman | Judge | American |
| Irwin Edman | ||
| Isaac Albeniz | Musician | Spanish |
| Isaac Babel | Journalist | Russian |
| Isaac Barrow | Mathematician | English |
| Isaac D'israeli | Writer | British |
| Isaac Hanson | Musician | American |
| Isabel Allende | Writer | Chilean |
| Isabella I | Royalty | Spanish |
| Isabelle Adjani | Actress | French |
| Isabelle Eberhardt | Explorer | English |
| Isidore Ducasse Lautreamont | Author | French |
| Isla Fisher | Actress | Australian |
| Islom Karimov | Statesman | |
| Ismail Haniyeh | Politician | Palestinian |
| Isocrates | Writer | Greek |
| Israel Kamakawiwo'ole | Musician | American |
| Italo Calvino | Journalist | Italian |
| Ivan Allen | Politician | American |
| Ivan Illich | Sociologist | American |
| Ivan Lendl | Athlete | Czechoslovakian |
| Ivica Dacic | Politician | Serbian |
| Ivy Lee | Writer | American |
| Iyad Allawi | Statesman | Iraqi |
“Life is made up, not of great sacrifices or duties, but of little things, in which smiles and kindness, and small obligations given habitually, are what preserve the heart and secure comfort.”