| PNO | Planned Nonoperation (vehicle status) | 计划不运行(车辆状态) |
| PNO | Pinotepa, Mexico | 墨西哥皮诺特帕 |
| PNO | Piano (music) | 钢琴(音乐) |
| PNO | Pacific Northwest Orienteering | 太平洋西北定向越野 |
| PNO | Precipitation Amount Not Available (METAR code) | 降水量不可用(METAR代码) |
| PNO | Petri Nets with Objects | 带对象的Petri网 |
| PNO | Peri- Natal Quality register | 围产期质量登记 |
| PNO | Prenegotiation Objective (contracting) | 谈判前目标(签约) |
| PNO | Pecunia Non Olet (Latin: money does not smell) | Pecunia Non Olet(拉丁语:金钱没有气味) |
| PNO | Parent's Night Out | 父母的夜晚 |
| PNO | Port of New Orleans | 新奥尔良港 |
| PNO | Public Network Operator | 公共网络运营商 |
| PNO | Pseudo-Natural Orbital | 伪自然轨道 |
| PNO | Program Number | 程序编号 |
| PNO | Project Number (assigned by activity) | 项目编号(按活动分配) |
| PNO | PROFIBUS Nutzerorganisation, e. V. | PROFIBUS螺母组织,e.V。 |
| PNO | progressive nuclear ophthalmoplegia | 进行性核性眼肌麻痹 |
| PNO | Pair Natural Orbital | 配对自然轨道 |
| PNO | Performers Network Online | 表演者网络在线 |
| PNO | PANACO, Inc. | PANACO公司。 |