| CNO | Chief Operating officer | 首席营运官 |
| CNO | Chief Negotiation Officer | 首席谈判代表 |
| CNO | Community Nutrition Organizer (Bangladesh) | 社区营养组织者（孟加拉国） |
| CNO | College of Nurses of Ontario | 安省护士学院 |
| CNO | Chief of Naval Operations | 海军作战部长 |
| CNO | Chief Nursing Officer | 主任护理军官 |
| CNO | Carbon Nitrogen Oxygen | 碳氮氧 |
| CNO | Com/Net/Org (GTLDs) | Com /净/有机(GTLDs) |
| CNO | congenital nephrotic(syndrome),other(types) | 先天性肾病（综合征），其他（类型） |
| CNO | carbon-nitrogen-oxygen | 碳氮氧 |
| CNO | Carbon Nitrogen And Oxygen | 碳、氮和氧 |
| CNO | Cornerstone Propane Partners | 基石丙烷合作伙伴 |
| CNO | Cyanate (form of cyanide) | 氰酸盐（氰化物形式） |
| CNO | Computer Network Operation(s) | 计算机网络操作 |
| CNO | Cashew Nut Oil | 腰果油 |
| CNO | Chief Networking Officer | 首席网络官 |
| CNO | Coconut Oil | 椰子油 |