| PDH | Pain Drug Hypnosis 
| Others |
| PDH | Pairing Diffie Hellman
| Others |
| PDH | Paraduodenal Hernia
| Others |
| PDH | Past Dental History
| Others |
| PDH | Pedro del Hierro
| Others |
| PDH | Performance Data Helper
| Others |
| PDH | Personal Digital Historian
| Others |
| PDH | Peterborough District Hospital
| Others |
| PDH | Pituitary Dependent Hyperadrenocorticism
| Others |
| PDH | Pituitary-Dependent Hyperadrenocorticism
| Others |
| PDH | Pleisynchronuous Digital Hiararchy
| Others |
| PDH | Plesio-Synchronous Digital Hierarchy
| Others |
| PDH | Plesiochronous Data Hierarchy
| Others |
| PDH | Plesiochronous Digital Hierarchy
| Others |
| PDH | Plesiosynchronous Digital Hierarchy
| Others |
| PDH | Plumas District Hospital
| Others |
| PDH | Pocket Dosimeter-High
| Others |
| PDH | Portland District Health
| Others |
| PDH | Portland District Health's
| Others |
| PDH | Pound Drever Hall
| Others |
| PDH | Powerline Duplex Half
| Others |
| PDH | Premier Diversified Holdings
| Others |
| PDH | Pretty darn happy
| Others |
| PDH | Pretty Darn Hot
| Others |
| PDH | Prevention of Deafness and Hearing Impairment
| Others |
| PDH | Primary Digital Hierarchy
| Others |
| PDH | Professional Development Hour
| Others |
| PDH | Professional Development Hours
| Others |
| PDH | Professional Driver Hire
| Others |
| PDH | Progressive Disseminated Histoplasmosis
| Others |
| PDH | Propane De Hydrogenation
| Others |
| PDH | propane dehydrogenation
| Others |
| PDH | Publik Draft House
| Others |
| PDH | Puente de Hozho
| Others |
| PDH | Pyar Dosti Hai
| Others |
| PDH | Pyruvate De-Hydrogenase
| Others |
| PDH | Pyruvate DeHydrogenase
| Others |