Benjamin J. Smith (born March 1, 1905, in Memphis, Tennessee) was an American jazz musician known for his skills as an alto saxophonist, tenor saxophonist, and clarinetist. In the early 1920s, Smith began his career playing with local jazz bands in Memphis and later joined territory bands such as the Connor and McWilliams Boston Serenaders, William Holloway and the Merrymakers, and Eli Rice's Plantation Cotton Pickers. During his time in Kansas City, he led his own bands and played with George E. Lee in 1930. In Pennsylvania, he led the White Hut Orchestra and collaborated with Blanche Calloway and Charlie Gaines. Smith also recorded with the Washboard Rhythm Kings.

In 1934, Smith moved to New York City, where he worked with notable musicians including Benny Carter, Claude Hopkins, and Hot Lips Page. Throughout the 1940s, he performed with the bands of Lucky Millinder, Andy Kirk, and Snub Mosley. As a composer, he is credited with the piece "I Dreamt I Dwelled in Harlem." In 1951, he recorded "By the Candleglow" and "Slippery Smith" with the Ben Smith Quartet, featuring Pete Martin, Artie Long, and Bob Bushnell. The date of his death remains unknown.