Robert Kosko, 75, of Monessen, passed away unexpectedly Sunday Nov. 21, 2021 in Penn Highlands Mon Valley Hospital. He was born on September 13, 1946 in New Eagle, the son of the late George L. and Margaret (Cowie) Kosko. Bob grew up in Donora and was a 1964 graduate of Donora High School. He then served his country in the U.S. Army during the Vietnam War. Once discharged from the service, he attended St. Vincent College. Bob retired from the Social Security Administration having worked as a Social Insurance Expert. He also worked at H & R Block at their Belle Vernon, Charleroi, and West Newton locations. Bob was a member of St. Spyridon Greek Orthodox Church and the Monessen Lions Club, having served as past president and was awarded a Melvin Jones Fellow. He was also a past District Governor for Lions District 14-E. He is survived by his wife of 49 years, Stamatia "Tommie" Kosko, son, George (Monica) Kosko of Forward Twp.; daughter, Elizabeth (Jonathan) Cole of Indian Head, PA; two brothers, Joseph Kosko of Donora, Philip Kosko of Lugoff, SC; sister, Bonnie (Ben) Jones of Rostraver Twp.; six grandchildren, Cody, Belle, Ariauna, Madison, Bolden, and Cooper; step grandsons, Eric and Dylan, and by several nieces and nephews. In addition to his parents, Bob was preceded in death by his twin brother George Kosko. Friends will be received in Dalfonso-Billick Funeral Home Inc. and Cremation Services, 441 Reed Avenue, Monessen, on Friday from 2 to 4 pm and 6 to 8 pm. Additional viewing will be held on Saturday from 11:00 am to 12:00 pm, time of the Funeral Service in St. Spyridon Greek Orthodox Church 119 St. Spyridon Lane Monessen, with Fr. Meletios Gianniodis officiating. Interment will be in National Cemetery of the Alleghenies, Bridgeville. The family suggests Memorial Contributions be made to St. Spyridon Church, 119 St. Spyridon Ln. Monessen, PA 15062. Condolences accepted for the family at www.dalfonso-billick.com.