AACS（Advanced Access Content System）是一种内容散布和数字版权管理的标准，尝试对于新一代光盘进行读取与复制上的限制。AACS是由AACS LA（AACS Licensing Administrator）负责制定，联合发展的企业包括迪士尼、英特尔、微软、三菱、松下电器、华纳兄弟、国际商业机器、东芝以及Sony，在2005年4月公开，并已列入HD DVD和蓝光光盘的数据读取限制。

The Advanced Access Content System (AACS) is a standard for content distribution and digital rights management, intended to restrict access to and copying of the post-DVD generation of optical discs. The specification was publicly released in April 2005 and the standard has been adopted as the access restriction scheme for HD DVD and Blu-ray Disc (BD). It is developed by AACS Licensing Administrator, LLC (AACS LA), a consortium that includes Disney, Intel, Microsoft, Panasonic, Warner Bros., IBM, Toshiba and Sony. AACS has been operating under an "interim agreement" since the final specification (including provisions for Managed Copy) has not yet been finalized.