Minor Scale was a test conducted on June 27, 1985, by the United States Defense Nuclear Agency (now part of the Defense Threat Reduction Agency) involving the detonation of several thousand tons of conventional explosives to simulate the explosion of a small nuclear bomb. The purpose of the test was to evaluate the effect of nuclear blasts on various pieces of military hardware, particularly new, blast-hardened launchers for the Midgetman ballistic missile.

In music theory, minor scale may refer to:

• a heptatonic scale whose first, third, and fifth scale degrees form a minor triad, that is, a seven-note scale in which the third note is a minor third (three semitones) above the first, and the fifth note is a perfect fifth (seven semitones) above the first. This includes (among others) the natural minor, harmonic minor, and melodic minor scales. A minor scale differs from a major scale in that the third degree in a major scale is a major third (four semitones) above the first degree. In other words, the third degree in a major scale is one semitone higher than in a minor scale.
• the natural minor scale, also known as Aeolian scale, taken by itself. When a major scale and a natural minor scale have the same key signature, they are relative keys. A natural minor scale has the same notes as its relative major scale, but is built starting from the sixth note of the relative major scale.
• the functional fusion of natural minor, harmonic minor, and melodic minor scales, as is used in Western classical music (see major and minor). A harmonic minor scale differs from a natural minor scale in that the seventh note is raised one semitone. Melodic minor scales raise both the sixth and seventh notes one semitone when ascending, but when descending, the sixth and seventh notes are flattened, producing the natural minor scale.