Hermann Hauser is a family workshop of German classical guitar luthiers based in Reisbach, Bavaria, whose instruments are widely regarded as among the finest concert classical guitars ever built. The lineage was established by Hermann Hauser I (1882–1952), who trained at the State School for Violin Making in Mittenwald and rose to international prominence after Andrés Segovia adopted a 1937 Hauser as his primary instrument, famously calling it "the greatest guitar of our epoch." Two Hauser Sr. guitars, including the Segovia instrument, are part of the Metropolitan Museum of Art's collection in New York.

The workshop has been continued through successive generations: Hermann Hauser II (1911–1988), Hermann Hauser III (born 1958), and Kathrin Hauser (born 1982), who joined the Reisbach shop in 2010. Each generation builds a small number of handmade concert classical guitars per year, typically inspired by the Spanish tradition (notably Antonio de Torres) but refined through the family's distinct German voicing and construction. Hauser models are commonly identified by maker (Hauser I, II, III, IV) and by lineage to the historic Segovia instrument.

Beyond instrument building, Hermann Hauser II founded the Reisbacher Gitarren-Seminar in 1967, a long-running classical guitar seminar still hosted by the family, and Hermann Hauser III established the non-profit Hermann Hauser Guitar Foundation in 2004 to support guitar and lute music scholarship. Hauser guitars have been played by leading concert classical guitarists including Andrés Segovia, Julian Bream, and David Russell.

Hermann Hauser has 7 products cataloged on Equipboard, including Classical & Nylon-String Guitars. Their gear is featured by 1 artist, with the strongest followings in Classical. Notable users include Julian Bream.