DOS 5

DOS 5 or DOS-5 may refer to:

• The Soviet space station Salyut 6
• DOS 5 (OS/2), one of the early project names for the then still unreleased IBM and Microsoft OS/2 1.0 between 1985 and 1987
• DR DOS 5.0
• MS-DOS 5.x, by Microsoft
• IBM PC DOS 5.x, by IBM