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