| OCCAM | Office of Cancer Complementary and Alternative Medicine | 癌症补充和替代医学办公室 |
| OCCAM | Oregon Center for Complementary and Alternative Medicine | 俄勒冈州补充和替代医学中心 |
| OCCAM | Ocean Circulation and Climate Advanced Modelling | 海洋环流与气候高级模拟 |
| OCCAM | Opportunistic Cartesian Cosine Approximate Matcher | 机会笛卡尔余弦近似匹配器 |
| OCCAM | Open Conditional Content Access Management | 开放式条件内容访问管理 |