Departments of Capital Complex Itanagar include:
- Power
- Public Works Department
- PHE & WS Division Itanagar
- Water Resource Division
- Health
- Education
- Food & Civil Supplies
- Agriculture/APMC
- Transport
- State Transport Services, Itanagar
- Child Development (ICDS Project)
- Town Planning
- Economics And Statistics
- Tax & Excise
- Bank
- District Industries Centre
- Highway
- Disaster Management