The music of Armenia (Armenian: հայկական երաժշտություն haykakan yerazhshtut’yun) has its origins in the Armenian highlands, dating back to the 3rd millennium BCE, and is a long-standing musical tradition that encompasses diverse secular and religious, or sacred, music (such as the sharakan Armenian chant and taghs, along with the indigenous khaz musical notation). Folk music was notably collected and transcribed by Komitas Vardapet, a prominent composer and musicologist, in the late 19th and early 20th centuries, who is also considered the founder of the modern Armenian national school of music. Armenian music has been presented internationally by numerous artists, such as composers Aram Khachaturian, Alexander Arutiunian, Arno Babajanian, Haig Gudenian, and Karen Kavaleryan as well as by traditional performers such as duduk player Djivan Gasparyan.

Traditional Armenian folk music as well as Armenian church music is not based on the European tonal system but on a system of tetrachords. The last note of one tetrachord also serves as the first note of the next tetrachord – which makes a lot of Armenian folk music more or less based on a theoretically endless scale.

Khaz is an Armenian neume, one of a set of special signs (khazes) constituting the traditional system of musical notation that has been used to transcribe Armenian music (mostly religious Armenian music) since the 8th century.

Armenia has had a long tradition of folk music since antiquity. During the Soviet era, Armenian folk music was taught in state-sponsored conservatoires. In 1978, influential kanon player and composer Khachatur Avetisyan founded the folk music department of the Komitas State Conservatory of Yerevan. Traditional instruments include the qamancha, kanon (box zither), dhol (double-headed hand drum, see davul), oud (lute), duduk, zurna, blul, sring, shvi, pku, parkapzuk, tar, dmblak, bambir, and to a lesser degree the saz. Other instruments often used include the violin and clarinet. The duduk is considered to be Armenia's national instrument, and among its well-known performers are Margar Margaryan, Levon Madoyan, Vache Hovsepyan, Gevorg Dabaghyan, and Yeghish Manukyan, as well as Armenia's most famous contemporary duduk player, Djivan Gasparyan.

Notable performers of folk music include vocalists such as Armenak Shahmuradyan, Ofelya Hambardzumyan, Vagharshak Sahakyan, Araksia Gyulzadyan, Varduhi Khachatryan, Norayr Mnatsakanyan, Hovhannes Badalyan, Hayrik Muradyan, Valya Samvelyan, Rima Saribekyan, Raffi Hovhannisyan, Avak Petrosyan, Papin Poghosyan, and Flora Martirosian.

There are also several Armenian folk ensembles, the Shoghaken Folk Ensemble, founded in 1995 in Yerevan, and others such as the Arev Armenian Folk Ensemble.

In ancient and medieval Armenia, the gusans (Armenian: գուսան) were the creative and performing artists – singers, instrumentalists, dancers, storytellers, and professional folk actors in public theaters. The word gusan is first mentioned in early Armenian texts of the 5th century AD, such as Faustus of Byzantium, Moses of Chorene, and others. In the early Middle Ages the word gusan was used as an equivalent to the classical Greek word mimos (mime). There were 2 groups of gusans: the first were from aristocratic dynasties (feudal lords) and performed as professional musicians; the second group comprised popular, but illiterate gusans.

The gusans were both criticized and praised, particularly in medieval Armenia. The adoption of Christianity had its influence upon Armenian minstrelsy, gradually altering its ethical and ideological orientation. The center of the gusans was the Goghtn gavar (canton), a region in the Vaspurakan province of Greater Armenia that bordered the province of Syunik.