Colonial Leather is an Australian manufacturer of musical instrument straps and leather accessories based in Long Gully, a suburb of Bendigo, Victoria. The company was established in March 1988, originally operating out of a garage in Eaglehawk and producing a mix of belts and souvenirs before specializing in guitar straps. By the 1990s it had grown into Australia's largest guitar strap manufacturer and expanded into export markets across the United States, Europe, and Asia.

The brand's catalog centers on handcrafted leather and webbing straps for guitar, bass, banjo, mandolin, and ukulele, along with neck straps for saxophone and other brass and woodwind instruments. Product lines include padded leather straps, decorative tooled and embroidered designs, suede straps, plain and printed webbing straps (including ranges featuring Aboriginal art), and custom laser-etched or embroidered options. The company also makes genuine leather belts, harmonica belts, capos, slides, and fingerboard oil.

In addition to its own retail and wholesale lines, Colonial Leather has produced straps as an OEM supplier for guitar makers including Maton, Gibson, and Washburn.

Colonial Leather has 1 product cataloged on Equipboard, including Straps & Strap Locks.