Tom Rozum, born January 21, 1951, is an American bluegrass mandolinist and singer based in Northern California, best known for his long-time musical partnership with Laurie Lewis. Originally from New England, Rozum performed traditional and original music with groups including Summerdog, Flying South, and the Rhythm Rascals. In 1986, he joined Lewis as a member of the original Grant Street Band. Primarily a mandolinist, Rozum also plays fiddle, mandola, and guitar. A fixture of the Bay Area bluegrass scene, he collaborated with Lewis on The Oak and the Laurel (1996), a Grammy-nominated album of duets. His solo album Jubilee combines traditional country songs with contemporary material.