Brook Mays Music Group known generally just as Brook Mays, is a Dallas, Texas-based retailer of musical instruments, sheet music, and supplies.

Founded as the Brook Mays Music Company, by its namesake investor Brook Mays, who saw the opportunity to open a piano dealership in Dallas, and opened the chain's original store on August 1901. At the time, it dealt exclusively in pianos, and became the largest such dealership in its region. Brook Mays was the only major music company in the area to survive the Great Depression.

In the 1940s, the company expanded its wares to include organs, sheet music, and band instruments. Extensive remodeling following World War II until the early 1950s led to expansion in the downtown Dallas store, which fostered the development of its band instrument division, which would become the largest supplier of band instruments to school groups in the southern United States. Brook Mays often has partnerships with school districts, and offers them bulk discounts.

The company grew rapidly with renewed interest in electrical instruments, and now has over 50 stores, plus a mail-order and e-commerce division to serve international customers. Each store has access to extensive instrument repair facilities, as well as the largest instrument rental service in the southwest United States.

Brook Mays' slogan is "Brook Mays means music."