| HCN | Heterogeneous Computer Network | 多机种计算机网络 |
| HCN | Homogeneous Computer Network | 同机种计算机网络 |
| HCN | Hypercube Connected Network | Hypercube连接的网络 |
| HCN | Homework Center Newsletter | 作业中心新闻稿 |
| HCN | Host Country National | 主办民族国家 |
| HCN | Health Communication Network | 健康通信网络 |
| HCN | Hispanic Communications Network (Washington, DC) | 西班牙裔通信网络（华盛顿特区） |
| HCN | Hydrogen Cyanide (prussic acid, hydrocyanic acid) | 氰化氢（氢氰酸、氢氰酸） |
| HCN | Health Care Real Estate Investment Trust, Inc. | Health Care房地产投资信托公司。 |
| HCN | Hydrogen Cyanide | 氰化氢 |