March 26, 1933 ~ March 21, 2021

Born in: Bronx, NY
Resided in: Smithtown, NY

The service will be livestreamed, please click the link below at 3:30 pm.


D’Agostino, Michael Dominick Age 87 of Smithtown, NY passed on March 21, 2021.

He grew up in Bronx, NY. Commuted to Brooklyn Technical High School. He was shaped by his service in the U.S. Air Force & the love of his country. Retired from Grumman Aerospace after 42 years and was the Director of Nuclear & Astrophysics Research. Completing his career as Director of Corporate Technology. Guest Scientist at Brookhaven National Labs. Fellow of the American Nuclear Society. He lived a life of service to others & brought caring and concern to family and friends. Shared 46 joyous years with his wife Joanne. Loving & Proud Father of Donna (John) White, Carol (Tom) Tokosh, Linda (Russell) D’Agostino-Dudka & Nicole (Jack) Leavens. Adored Grandfather of Michelle, John Michael, Sara, Jack & Rachel. Cherished Brother of Dominick D’Agostino. In lieu of flowers in Mike’s memory, please reach out to someone in need.


Visitation: March 24, 2021 3:00 - 7:00 pm

Branch Funeral Home Smithtown
190 E. Main St.

Mass: March 25, 2021 10:30 am

St Patrick's RC Church (SMT)
280 E. Main St
Smithtown, NY 11787


Gate Of Heaven Cemetery
10 W Stevens Ave

View current weather.

Memories Timeline

View the Timeline


  1. My Deepest Sympathy – My Love and Prayers goes out to all of you. Cousin Linda and Lee and Family from Texas

  2. We are so sorry for your loss. Wish we could be there in person to comfort you.
    You are family. So many happy memories of your Dad. He will be sorely missed.
    With deepest sympathy,
    Patty, Rich, Rob, Julie & Brian

  3. Dad, you have meant the world to me, no one could have asked more for a father figure and a great friend. Love you and miss you. RIP 💔 Sonny boy 🙏

  4. candleMy thoughts and prayers are with all of the D’Agostino family! Mike you were a true gentleman and a class act!!! RIP❤️🙏🏻❤️

Sign the Guestbook, Light a Candle

Sign the Guestbook