List of third intervals

Third interval may refer to one of the following musical intervals in equal-temperament tuning:

Alternatively, it may apply to

Table of thirds in equal temperaments tuning

Number of semitones	Minor, major, or perfect intervals	Short	Augmented or diminished intervals	Short	Widely used alternative names	Short	Audio
2	Major second	M2	Diminished third	d3	Tone, whole tone, whole step	T
3	Minor third	m3	Augmented second	A2
4	Major third	M3	Diminished fourth	d4
5	Perfect fourth	P4	Augmented third	A3