George Peter "Jiggs" Dahlberg (April 21, 1900 – September 18, 1993) was an American football and basketball coach and college athletics administrator. He served as the head basketball coach at the University of Montana from 1937 to 1942 and again from 1944 to 1955, compiling a record of 221–223. Dahlberg was also the head football coach at Montana for one season, in 1945, tallying a mark of 1–4. He was the athletic director at Montana from 1954 to 1961.