Baccaglioni is a custom guitar and bass workshop based in Buenos Aires, Argentina, founded and run by luthier Alejandro Baccaglioni. The shop builds made-to-order electric instruments, takes on repair and restoration work, and operates a school of electric lutherie where Baccaglioni trains other builders.

The workshop's catalog leans toward classic solidbody designs reinterpreted in-house, including Les Paul-style models such as the Les Paul DLX II — typically built with mahogany bodies and figured maple tops — alongside neck-through electric basses. Custom one-off builds for working musicians make up a significant share of the output, with players able to specify woods, hardware, and pickups directly with the luthier.

The brand has a notable footprint in the Argentine rock scene. Lula Bertoldi of Eruca Sativa plays a Baccaglioni signature build (the Lula Bertoldi Maple Top), and the workshop is also associated with Elio Delgado of Callejeros. Instruments are sometimes branded "Baccaglioni Master Works" on the headstock and are most commonly found through the South American secondary market.

Baccaglioni has 6 products cataloged on Equipboard, including Solid Body Electric Guitars and Electric Basses. Their gear is featured by 3 artists, with the strongest followings in Rock and Latin. Notable users include Lula Bertoldi, Brenda Martin, and Elio Delgado.