American jazz musician Bob Enevoldsen (1920–2005) was a versatile multi-instrumentalist, primarily known for his work on valve trombone and bass. A prominent figure in West Coast jazz, he contributed to countless recordings and live performances throughout the 1950s and beyond, playing with notable artists like Gerry Mulligan, Art Pepper, and Shorty Rogers. His adaptable style and technical proficiency made him a sought-after sideman and a significant presence in the era's cool jazz scene.