IPD
- Chartered Institute of Personnel and Development
- IDP (disambiguation)
- Impulsive personality disorder
- Independence Day (1996 film)
- Independence Police Department (Missouri)
- Indianapolis Police Department
- Individual participant data
- Inglewood Police Department
- Initiative for Policy Dialogue
- Integrated passive devices
- Integrated powerhead demonstrator
- Integrated project delivery
- Invasive pneumococcal disease
- Irvington, New Jersey
- Parkinson's disease
- Patients
- Pupillary distance
- Volvo C30