| NAPA | National Academy of Performing Arts 
| Others |
| NAPA | National Academy of Political Awareness
| Others |
| NAPA | National Academy of Public Administration
| Others |
| NAPA | National Acrylic Painters Association
| Others |
| NAPA | National Activity Providers Association
| Others |
| NAPA | National Adaptation Plan of Action
| Others |
| NAPA | National Adaptation Programme of Action
| Others |
| NAPA | National Allowance Pricing Agreement
| Others |
| NAPA | National APIA Panhellenic Association
| Others |
| NAPA | National APIDA Panhellenic Association
| Others |
| NAPA | National Asphalt Pavement Association
| Others |
| NAPA | National Association for Plan Advisors
| Others |
| NAPA | National Association for Providers of Activities
| Others |
| NAPA | National Association for the Practice of Anthropology
| Others |
| NAPA | National Auto Parts Association
| Others |
| NAPA | National Automobile Parts Association
| Others |
| NAPA | National Automotive Parts Association
| Others |
| NAPA | National Aviation Parts Assistance
| Others |
| NAPA | Naval Architectural PAckage
| Others |
| NAPA | Need Another Part ASAP (As Soon As Possible)
| Others |
| NAPA | Network Application Performance Analysis
| Others |
| NAPA | Neurological and Physical Abilitation Center
| Others |
| NAPA | Never Any Parts Available
| Others |
| NAPA | Never Ask Phil Anything
| Others |
| NAPA | No African People Allowed
| Others |
| NAPA | No Apparent Professionals Anywhere
| Others |
| NAPA | No Appropriate Parts Available
| Others |
| NAPA | No Appropriate Placement Available
| Others |
| NAPA | No Apto Para Adultos
| Others |
| NAPA | No Artificial Preservatives Added
| Others |
| NAPA | No Atlanta Petitions Accepted
| Others |
| NAPA | No Auto Parts Available
| Others |
| NAPA | North America Pool Association
| Others |
| NAPA | North American Partners in Anesthesia
| Others |
| NAPA | North American Pedophile Association
| Others |
| NAPA | North American Phonetic Alphabet
| Others |
| NAPA | Northwest Automotive Press Association
| Others |
| NAPA | Not A Pocono Achiever
| Others |
| NAPA | Not A Problem Anymore
| Others |
| NAPA | Not Any Parts Available
| Others |