| DDN | Digital Data Network | 数字数据网 |
| DDN | Defense Data Network | 国防数据网 |
| DDN | Distributed Data Network | 分布式数据网 |
| DDN | Digital divide network | 数字鸿沟网 |
| DDN | Design Decision Notice | 设计决策通知 |
| DDN | Data Delivery Notice | 数据交付通知 |
| DDN | Defense Digital Network | 国防数字网络 |
| DDN | Discado Directo Nacional (Spanish: national direct dial) | Discado Directo Nacional(西班牙语:全国直拨) |
| DDN | Dynamex, Inc. | Dynamex公司。 |
| DDN | De Divinus Nominibus | De Divinus Nominibus公司 |
| DDN | Delta Downs, Queensland, Australia | Delta Downs,昆士兰,澳大利亚 |
| DDN | Don't Do Nothing | 不做什么 |
| DDN | Defense Data Network (US DoD DCS) | 国防数据网络(美国国防部DCS) |
| DDN | Descent Developer Network | 下降开发者网络 |
| DDN | Dance Dot Net (website) | 舞蹈点网(网站) |
| DDN | Donjon de Naheulbeuk (French website) | Donjon de Naheulbeuk(法语网站) |
| DDN | Dayton Daily News (Ohio newspaper) | 代顿每日新闻(俄亥俄州报纸) |