A Baroque violin is a violin set up in the manner of the baroque period of music. The term includes original instruments which have survived unmodified since the Baroque period, as well as later instruments adjusted to the baroque setup, and modern replicas. Baroque violins have become relatively common in recent decades thanks to historically informed performance, with violinists returning to older models of instrument to achieve an authentic sound.
The differences between a Baroque violin and a modern instrument include the size and nature of the neck, fingerboard, bridge, bass bar, and tailpiece. Baroque violins are almost always fitted with gut strings, as opposed to the more common metal and synthetic strings on a modern instrument, and played with a bow made on the baroque model rather than the modern Tourte bow. Baroque violins are not fitted with a chin rest and are played without a shoulder rest.