Contacts under I
- Incapacity Benefits Branch
- Income Tax helpline
- Independent Assessor of Complaints for the Public Prosecution Service
- Independent Case Examiner
- Independent Living Fund helpline
- Industrial Court
- Industrial Injuries Branch
- Industrial Tribunals and the Fair Employment Tribunal NI
- Information Commissioner's Office
- Inland Fisheries Belfast Office - DAERA
- Inland Fisheries Portadown Office - DAERA
- Insolvency Service
- Inspire
- Internet Watch Foundation
- Invest Northern Ireland
- Investment Strategy for Northern Ireland (ISNI)
- Irish League of Credit Unions
- Irish Passport Office