Natural scale may refer to:
Music
- 5-limit diatonic major scale
- Natural minor scale, as opposed to harmonic and melodic
- C major and A minor, the diatonic scale in keys with no sharps or flats
- Harmonic series (music), the series of pitches produced by instruments such as the natural horn and trumpet
- The major scale in Pythagorean tuning, formed from a succession of fifths starting one below the tonic
- On many wind instruments<!--such as the recorder and Irish tin whistle-->, the scale most easily produced by lifting the fingers one at a time from bottom to top<!---->
Other
- Nondimensionalization, the removal of units from a mathematical equation