| HAPC | Habitat Area of Particular Concern
| Others |
| HAPC | Habitat Areas of Particular Concern
| Others |
| HAPC | Habitat Areas of Particular Concern (NOAA)
| Others |
| HAPC | Hagerstown Area Pregnancy Center
| Others |
| HAPC | Hagerstown Area Pregnancy Clinic
| Others |
| HAPC | Haitian American Professionals Coalition
| Others |
| HAPC | Hanover Area PROBUS Club
| Others |
| HAPC | Headache & Pain Center
| Others |
| HAPC | Headache and Pain Center
| Others |
| HAPC | Heavy Armored Personnel Carrier
| Others |
| HAPC | Help A Poor Child
| Others |
| HAPC | High Amplitude Propagated Contractions
| Others |
| HAPC | Highest Average Plan Compensation
| Others |
| HAPC | Historic and Architectural Preservation Commission
| Others |
| HAPC | HIV/AIDS Program Coordinator
| Others |
| HAPC | Homer Advisory Planning Commission
| Others |
| HAPC | Housing Authority of Pulaski County
| Others |
| HAPC | Houston Area Pastor Council
| Others |