Bill Koll was an American wrestler at Iowa State Teachers College (now the University of Northern Iowa) and wrestling coach, most notably at his alma mater and at Penn State University. As a wrestler Koll was undefeated (72-0) and won three straight NCAA championships (1946–1948), He was twice voted outstanding wrestler at the national tournament, the first wrestler to achieve this honor. Koll competed for the U.S. at the 148 Olympics in London and place fifth in the freestyle competition. As a coach Koll led Penn State for 14 seasons, which included unbeaten dual meet campaigns in 1967, '70, '71, '72 and '74.

Koll's college career was interrupted by World War II, during which he participated in D-Day invasion and earned Bronze Star. Koll is a member of the National Wrestling Hall of Fame and the father of Rob Koll

Rob Koll

Rob Koll is the David R. Dunlop ’59 Head Coach of Wrestling at Cornell University. Koll has lead his team to five top-five finishes in the NCAA Division I wrestling tournament, including second place finishes in 2010 and 2011. The 2010 and 2011 finishes were the best ever for an Ivy League team...

, the head wrestling coach at Cornell University.