ADOS

ADOS may refer to:


 * 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

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