| INCA | Indiana Night Club Association | 印第安纳夜总会协会 |
| INCA | Iceland Nature Conservation Association | 冰岛自然保护协会 |
| INCA | International Newspaper Colour Association | 国际报纸颜色协会 |
| INCA | Intelligence Communications Architecture | 情报通信系统 |
| INCA | Intelligent Net Centric Architecture | 智能网络中心架构 |
| INCA | Interhemispheric Differences in Cirrus Properties from Anthropogenic Emissions | 由人为排放引起的太阳圈特性的半球间差异 |
| INCA | Instinet ECN (stock symbol) | Instinet ECN（股票代码） |
| INCA | Iloilo National College Of Agriculture | 伊洛伊洛国立农业学院 |
| INCA | Integrated Nuclear Communications Assessment | 综合核通信评定 |
| INCA | INitiative en Combustion AvancÉe (French: Advanced Combustion Initiative) | INitiative en Combustion AvancÉe (French: Advanced Combustion Initiative) |
| INCA | Inequality Necessary Conditions Analyzer | 不等式必要条件分析器 |
| INCA | Industrielle Computer Anwendungen | 工业计算机 |
| INCA | Institut National Canadien pour les Aveugles (Canadian National Institute for the Blind) | 加拿大国家盲人研究所 |
| INCA | Instituto Nacional de Ciencias Agricolas (Cuba) | 国家农业研究所（古巴） |
| INCA | Iterative Neighborhood Cluster Analysis | 迭代邻域聚类分析 |
| INCA | Interactive Controls Analysis (NASA) | 交互式控制分析（NASA） |