ACM SIGOPS is the Association for Computing Machinery's Special Interest Group on Operating Systems, an international community of students, faculty, researchers, and practitioners associated with research and development related to operating systems.

In addition, the organization offers multiple awards recognizing outstanding participants in the field, including the Dennis M. Ritchie Doctoral Dissertation Award, in honor of Dennis Ritchie, co-creator of the C programming language and Unix operating system.

[2] In 1965, Henriette Avram started the ACM Special Interest Committee on Time-Sharing (SICTIME), and Arthur M. Rosenberg became the first chair.

[3] ACM SIGOPS sponsors the following industry conferences, some independently and some in partnership with industry participants such as ACM SIGPLAN, USENIX, Oracle, Microsoft, and VMWare.

ACM SIGOPS includes a Hall of Fame Award, started in 2005, recognizing influential papers from ten or more years in the past.