ADOS may refer to:
Computer operating systems Access DOS, assistive software shipped with Microsoft's MS-DOS 6.2x ADOS (Russian operating system) (or АДОС), ca. 1989 Advanced DOS, a project name for IBM and Microsoft's OS/2 1.0 Arabic MS-DOS, from Microsoft Atari DOS, an 8-bit disk operating system used in Atari computers
Other uses American Descendants of Slavery, a descriptive term and political movement Autism Diagnostic Observation Schedule, a diagnostic test The novel A Dream of Spring in the book series A Song of Ice and Fire
See also AOS (disambiguation) DOS (disambiguation)