Auster is a Turkish musical instrument brand based in Bornova, İzmir, and distributed by Marda İthalat. The company offers a broad catalog of entry-level and mid-range instruments aimed at students and hobbyists, including classical, acoustic, and electric guitars, ukuleles, violins, clarinets, and keyboards, along with accessories such as strings, cases, rosin, and microphone stands.

The brand is best known for its affordable guitar lines, including the AS 100 and AS 120 series electric models offered in finishes like Daphne Blue, Honey Burst, Miami Blue, and Olympic White, as well as Telecaster-style models such as the AT200. Their 4/4 classical guitars are sold in several color options, and the lineup extends to wind instruments like the AGCL100 clarinet and accessories such as the AS601 microphone stand. Auster instruments are primarily sold through Turkish retailers and online marketplaces including Akakçe, n11, and Jazz Müzik Market.

Auster has 1 product cataloged on Equipboard, including Solid Body Electric Guitars.