"(It's No) Sin" is a 1951 popular song with music by George Hoven and lyrics by Chester R. Shull. Popular recordings of the song were made by The Four Aces and Eddy Howard. The recording by Eddy Howard was released by Mercury Records as catalog number 5711. It first reached the Billboard magazine charts on September 14, 1951 and lasted 23 weeks on the chart, peaking at #1.  The recording by The Four Aces was released by Victoria Records as catalog number 101. It first reached the Billboard magazine charts on September 7, 1951 and lasted 22 weeks on the chart, peaking at #4.  This was The Four Aces' first charting record and led to their receiving a contract with a major company, Decca. This song should not be confused with "It's a Sin", another popular song of the same era.