George Cassidy (7 September 1936 – 28 May 2023) was a jazz musician and music teacher from Bloomfield, Belfast, Northern Ireland, specializing in the tenor saxophone.

He was also noted for teaching fellow Belfast musician Van Morrison music reading and notation and giving him saxophone lessons.

The band would play a variety of genres, including pop songs of the time, like "Yellow Submarine" by The Beatles, and traditional jazz.

"[22][23] "When I started studying tenor saxophone as a kid in Belfast, I did so with a guy named George Cassidy, who was also a big inspiration.

"[24][25][26] As a devoted tenor saxophonist, Cassidy opted for the Henri Selmer Paris, for its warm, rich and expressive tone, as well as its hand-made, durable craftsmanship and quality.

[27] Cassidy performed in various charitable, community, historic and remembrance events[28][29] throughout Northern Ireland, such as annually at the Black Parade.

[30] The band was considered one of the most prominent musical groups in the country during the late 20th century, achieving critical acclaim and cultivating a dedicated fanbase through their energetic live performances and strong audience engagement.

[33][34] Cassidy with The Regal performed a number of times at The Grand Opera House, supporting act for Donald Peers and Nancy Whiskey.

Cassidy enjoyed Horse Racing, and frequented the Canberra Bar, Monico and The Raven Social Club.