Dennis J. Dunigan, age 71, passed away on July 3, 2023 at Baystate Medical Center. He was born on May 22, 1952 in Chicopee, son of the late Vernon and Stella (Sabouran) Dunigan. Dennis Retired from Smith and Wesson. He is survived by his loving wife, Rosemary (Myslinski) Dunigan of Chicopee; two sons, Derek Dunigan and his wife Kristina of Belchertown and Ryan Dunigan of Chicopee; one daughter, Alana (Dunigan) Billings of Somers, CT; one brother Bruce Dunigan of Chicopee; four grandchildren, Halford, Claire, Evan and Kyle. He is predeceased by his brother Larry Poirier. All services will be private. Burial will take place at the convenience of the family. For online condolences, please visit www.GriseFH.com.