Thomas J. Kostroski Obituary

We are sad to announce that, on February 25, 2026 we had to say goodbye to Thomas J. Kostroski of Tomahawk, Wisconsin. Leave a sympathy message to the family in the guestbook on this memorial page of Thomas J. Kostroski to show support.

Though Thomas has departed this earthly realm, his legacy endures — a legacy of love that will continue to illuminate the lives of family and friends in the darkest of hours. May his spirit soar on wings of eternal peace, forever cherished in the tender embrace of memory.

He is survived by: his parents, Kenneth Kostroski and Patricia Kostroski (Garski); his wife Penny Kostroski of Tomahawk; his siblings, Terry Kostroski (Kay) of Tomahawk, Cary "Birdy" Kostroski (Lisa) of Denver, CO, Tim Kostroski (Sheila) of Wausau, Audrey Gut (Jeff) of Wausau, Jim Kostroski (Denise) of Rochester, MN and Jayme Stevens (Thad) of Wausau; and his grandchildren, Ava and Emery Dombrock.