DOS (disambiguation)

DOS may be:

• The DOS operating systems for the IBM-compatible personal computer, including PC-DOS, MS-DOS, DR-DOS, and FreeDOS.

• Any disk operating system is an operating system that resides on a disk.

• The United States Department of State is the Cabinet-level agency in charge of United States foreign affairs.

• A denial-of-service attack (DoS attack) is an attack in which no access to the system(s) is gained, but rather a loss of service is incurred, typically the loss of network connectivity and services.

• In the Spanish language, dos is the number two.

• Density of states is a property in condensed matter physics.

• In health insurance, a date of service is the date on which a patient receives care.

• dos is a band that consists of husband and wife bass duo Mike Watt and Kira Roessler.