Sax Dakota is a line of professional saxophones manufactured as a division of F.E. Olds and Son, Inc., based in Mountainside, New Jersey. The company produces alto, tenor, soprano, baritone, and straight-neck saxophones aimed at pro-level players, with model lines such as the SDA-XR-82 alto and SDB-XR-62 baritone. The lineup traces its origins to a small European saxophone workshop and is finished and set up in the United States.

The instruments are known for features including stainless steel key rods, ergonomic keywork, specialized neck tapers, and a range of lacquer, plated, and antiqued finishes. Alongside standard curved altos and tenors, Sax Dakota is notable for offering straight-body alto and tenor saxophones, a relatively uncommon format in the professional market.

The brand maintains an extensive artist roster of working jazz, R&B, gospel, and session saxophonists, and its horns are carried by specialty saxophone retailers and wind instrument dealers in North America.

Sax Dakota has 22 products cataloged on Equipboard, including Alto Saxophones, Tenor Saxophones, and Soprano Saxophones. Most Sax Dakota products fall in the mid-tier range — professional-grade without flagship pricing.