Alex Martin may refer to four artists; a Catalan electronica artist, an American-Breton jazz guitarist, a Welsh guitarist, and an English guitarist also known as BLACK DOG.

Alex Martin [1] is an electronica artist from Barcelona, Spain. He worked in the 90s for groups such as F-Communications, Cosmos Records, Minifunk, and Highlamm. One of the country's electronica artists with more international projection, he has been involved more recently in numerous parallel projects like Full Duplex, Alex Martin Ensemble, Fat Db, etc.

Alex Martin [2] is a jazz guitarist from Brittany, France, now based in Washington, D.C.

Alex Martin [3] is a guitarist from Cardiff, UK who occasionally plays his own music on his PC, messing with Last.fm's records.

Alex Martin [4] is a guitarist from London, UK, who plays electric and acoustic guitar, bass guitar and some keyboards, and creates and records his own music. He is also sometimes known as Black Dog.

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