Walter S. Koroljow

Walter S. Koroljow, age 83, of Newark, DE, passed away on Wednesday, August 6, 2025.

Born in Poland on March 28, 1942, he was a son of the late Sergei and Maria (Lekgher) Koroljow. Walter immigrated to the United States with his family when he was 5 years old. He earned his PhD in physics from Temple University. Walter made his career as a physicist at Booz Allen Hamilton.

In his spare time, Walter enjoyed challenging his loved ones to a game of chess. He was an avid bicyclist and a member of the Potomac Peddlers for many years. Walter later began race walking and also had a passion for fast cars.

Walter is survived by his loving wife, Susan (Cicinato) Koroljow; son, Alexander Koroljow; stepson, Ian Corson; grandchildren, Jacob R. Corson and Nathan A. Corson; and sister, Laura Dmohowski.

All services will be held privately.

In lieu of flowers, donations may be made in Walter’s memory to Doctors Without Borders USA, P.O. Box 5030, Hagerstown, MD 21741-5030 or online by clicking here; or to NPR, P.O. Box 791490, Baltimore, MD 21279-1490 or online by clicking here; or to the World Wildlife Fund, 1250 24th Street, N.W., Washington, DC 20037 or online by clicking here.