Tom Hynes is a distinguished American jazz arranger and composer, active since the late 20th century. Known for his sophisticated and harmonically rich contributions to large ensemble jazz, Hynes has a particular knack for crafting intricate voicings and dynamic sectional interplay. His arrangements, often characterized by their blend of traditional swing elements with contemporary harmonic language, have been performed by numerous collegiate and professional big bands. Hynes's work has been featured in various jazz festivals and recording projects, enhancing the repertoire for modern jazz orchestras and solidifying his reputation as a significant voice in contemporary big band writing.