Pirastro is a German manufacturer of strings for bowed instruments, based in Offenbach am Main and producing strings by hand since 1798. The company makes a wide range of strings for violin, viola, cello, and double bass across all three traditional construction types — gut, synthetic core, and steel — along with strings for viola da gamba, concert and folk harp, and erhu. Rosin, shoulder rests, chinrests, and string care products round out the catalog.

The brand is best known for its premium synthetic-core lines, including Evah Pirazzi, Evah Pirazzi Gold, and the more recent Perpetual and Evah Pirazzi Neo, alongside long-standing products such as Obligato, Tonica, and the gut-core Eudoxa, Olive, and Passione lines. Student-grade options like Piranito sit at the more affordable end. Pirastro strings are used widely in classical and orchestral playing and have a long-standing reputation among professional violinists, cellists, and bassists.

Pirastro has 3 products cataloged on Equipboard, including Strings and Rosin.