APEN
| Acronym | Definition |
|---|---|
| APEN | Australasia-Pacific Extension Network (Wodonga, Victoria, Australia) |
| APEN | Asian Pacific Environmental Network |
| APEN | Aerial Phenomena Enquiry Network (Unidentified Flying Objects) |
| APEN | Air Pollution Emission Notice |
| APEN | Arkansas Parenting Education Network (Little Rock, AR) |