Moanin' Low is a popular torch song. The music was written by Ralph Rainger; the lyrics by Howard Dietz. The song was published in 1929 and was introduced that same year in the musical revue The Little Show by Libby Holman becoming a hit and Holman's signature song. A recording by The Charleston Chasers (vocal by Eva Taylor) was also popular in 1929.

Since its publication, the song has become a popular jazz standard.