- Internship
- Interoperability
- Interpersonal Communication
- Interrogation
- Interviewing
- Interviews
- Intestinal Diseases
- Intoxication
- Intraosseous Infusion
- Intravenous Therapy
- Intubation
- Intumescents
- Inventions
- Investigations
- Investigators
- Investments
- Iroquois Theater Fire, 1903
- Iroquois Theatre
- Islam
- Islands
- IT
- IV Therapy