| PSDN | Packet Switched Data Networks | 分封交换数据网络 |
| PSDN | Philippine Sustainable Development Network | 菲律宾可持续发展网络 |
| PSDN | Partido Social Democrata Nacional (National Social Democratic Party - Brazil) | 国家社会民主党（巴西国家社会民主党） |
| PSDN | Progress Software Developers Networktm | Progress软件开发人员网络tm |
| PSDN | Packet Switched Data Network | 分组交换数据网络 |
| PSDN | Public Switched Data Network | 公共交换数据网络 |