| PWH | Pacific Western Helicopters 
| Others |
| PWH | Palomino Walking Horse
| Others |
| PWH | Partners For World Health
| Others |
| PWH | Pee Wee Herman
| Others |
| PWH | Pee-Wee Herman
| Others |
| PWH | Pemberton Whiteman & Hill LLC
| Others |
| PWH | Pemberton Whiteman & Hill LLC.
| Others |
| PWH | Pennsylvania Working Home
| Others |
| PWH | People With a History
| Others |
| PWH | People With Haemophilia
| Others |
| PWH | People With HIV
| Others |
| PWH | Permanent Workers Household
| Others |
| PWH | Perry World House
| Others |
| PWH | Persons With Hemophilia
| Others |
| PWH | PetaWatt-Hour
| Others |
| PWH | Physicians for Women's Health
| Others |
| PWH | Plantation Walking Horse
| Others |
| PWH | Plantation Walking Horses of Maryland
| Others |
| PWH | Play with Honor
| Others |
| PWH | Please Wash Hands
| Others |
| PWH | Prince of
| Others |
| PWH | Prince of Wales Hopital
| Others |
| PWH | Prince of Wales Hospice
| Others |
| PWH | Prince Of Wales Hospital
| Others |
| PWH | Prince William Hospital
| Others |
| PWH | Pro Wrestling Holland
| Others |
| PWH | Probably Will Hold
| Others |
| PWH | Professional Women in Healthcare
| Others |
| PWH | Project Watch Health
| Others |
| PWH | Project World Health
| Others |
| PWH | Prototype Wave Height
| Others |
| PWH | Pueblo West High
| Others |
| PWH | Pulse Width High
| Others |