Samuel Siegel (born 1875, Des Moines, Iowa — died January 14, 1948, Los Angeles, California) was an American mandolin virtuoso and composer who played mandolin on 29 records for Victor Records, including 9 pieces of his own composition and two that he arranged. Siegel was the first mandolinist to record on Emile Berliner's phonograph disk-records. He was labeled "America's Greatest Mandoline Virtuoso" and "The King of the Mandolin" in the May 1900 Banjo World.

Siegel performed both in vaudeville, as well as in concert halls. He had no formal training in music, but saw that the mandolin needed original music, rather than relying on the transcribed violin music. His compositions and arrangements were well known in his day.

He was the author of Siegel's Special Mandolin Studies, published by Joseph W. Stern & Co., 1901, in which he covered left-hand Pizzicato and harmonic duo style.