易安信公司（英语：EMC Corporation；NYSE：EMC）为美国一家跨国信息技术企业，主要提供数据存储、信息安全、虚拟化、云计算等用于存储、管理、保护和分析大量数据的产品和服务。EMC公司创建于1979年，总部设在马萨诸塞州霍普金顿市。

英特尔前高管理乍得·伊根（Richard Egan）与大学室友罗杰·马里诺（Roger Marino）在1979年创建公司。公司名称EMC代表创始人的首写字母，第三和第四创始人分别为Connelly和Curly，因此有EMC。首席执行官Joseph Tucci在EMC World 2012大会上提到，公司的全称是EMC Corporation。该公司的标志参考爱因斯坦质能方程，亦采用指数2。

EMC Corporation (stylized as EMC²) is an American multinational corporation headquartered in Hopkinton, Massachusetts, United States. EMC sells data storage, information security, virtualization, analytics, cloud computing and other products and services that enable businesses to store, manage, protect, and analyze data. EMC's target markets include large companies and small- and medium-sized businesses across various vertical markets. The stock was added to the New York Stock Exchange on April 6, 1986, and is also listed on the S&P 500 index.