Donald A. Nowakowski, 59, of Butler passed away on Sunday, September 26, 2021. He was born in Butler to Donald and Mary Nowakowski. Donald worked as a diesel mechanic for numerous years and also worked for Filmtronics Inc.for a large portion of his career. He enjoyed sports, especially Steelers football and Penguins hockey. Donald was known for being a hard worker who could fix anything. His favorite pastime was farming and loved nothing more than being “Pap” to his grandchildren. Don was the beloved husband to Beth A. (Slupe) Nowakowski; father of Dustin (Chelsea) Bowser and Emily Nowakowski (Chris Hoburg); grandfather of Nataley, Vivienne, Ava, and Ryder. He is also survived by his sister Molly (Keith) Wilbert. Friends will be received on Saturday, October 2nd from 1-3 PM in the SPENCER D. GEIBEL FUNERAL HOME & CREMATION SERVICES, 140 NEW CASTLE RD, BUTLER, PA 16001, WWW.SPENCERDGEIBEL.COM. A prayer service will immediately follow in the funeral home.