| PENIS | Penitation Intrument 
| Others |
| PENIS | People Entertained Never in Sports
| Others |
| PENIS | People Entitled Near Iceland Sanctuaries
| Others |
| PENIS | Piece of Enjoyably Nutritious Iced Strudel
| Others |
| PENIS | Pointless Exercise Not Involving Soldiers
| Others |
| PENIS | Practical Ejaculate Newborn Injection System
| Others |
| PENIS | Preventing Events Naturually In Space
| Others |
| PENIS | Proton Enhanced Nuclear Induction Spectroscopy
| Others |
| PENIS | Proton-Enhanced Nuclear Induction Spectroscopy
| Others |