Some clients of HNKC are:
- Bangladesh Army
- Dhaka South City Corporation, GoB
- Dhaka North City Corporation, GoB
- Narayanganj City Corporation, GoB
- Ansar-VDP Unnayan Bank, GoB
- Bangladesh Krira Shikkha Protishtan (BKSP), GoB
- Savar Cantonment Board, GoB
- Directorate of Primary Education, GoB
- National Sports Council, GoB
- Department of Youth Development, GoB