D'Orazio Strings is an Italian string manufacturer based in the Abruzzo region, a part of central Italy with a centuries-old tradition of string making that traces its roots to the village of Salle. The company's own lineage dates to 1859, and its catalog spans electric guitar, acoustic guitar, classical, bass, and double bass strings, with a particular focus on bass and upright bass players.

Among the brand's more recognizable products are the Uli Jon Roth Signature Sky Guitar strings, developed for Roth's extended-range Sky guitar and available in light gauges down to .008, and the Ares Tavolazzi Signature Jazz Line double bass strings, a nylon round-wound set aimed at jazz upright players. D'Orazio also produces Rockabilly Ropecore chrome-steel flatwound upright bass strings designed for slap-style players, alongside standard bronze-wound acoustic bass sets and nickel-wound electric guitar sets.

D'Orazio is now part of the Markbass group, and the brand's string-making expertise has been folded into collaborative product development with Markbass — notably the Longevo series, which pairs traditional Italian winding methods with a nano-coating treatment for extended string life.

D'Orazio has 3 products cataloged on Equipboard, including Strings and Strings. Their gear is featured by 2 artists, with the strongest followings in Rock and Jazz. Notable users include Ares Tavolazzi and Uli Jon Roth.