Lucy Isabelle Marsh (April 10, 1878 – January 20, 1956) was an American lyric soprano who made her career as a professional recording artist for the Victor Talking Machine Company. She was an anonymous mainstay of the company, recording prodigiously from 1909 into the late 1920s. At the same time, she quickly won popular and critical recognition under her own name as a major artist on recordings for Victor.