| Number: | 77 |
| Position: | Offensive tackle |
| Birth Date: | September 6, 1946 |
| Birth Place: | Los Angeles, California, U.S. |
| Height Ft: | 6 |
| Height In: | 8 |
| Weight Lbs: | 258 |
| High School: | Birmingham (Los Angeles, California) |
| College: | USC |
| Draftyear: | 1969 |
| Draftround: | 5 |
| Draftpick: | 116 |
| Pastteams: | |
| Statlabel1: | Games played |
| Statvalue1: | 61 |
| Statlabel2: | Games started |
| Statvalue2: | 0 |
| Statlabel3: | Fumble recoveries |
| Statvalue3: | 1 |
| Pfr: | HayhBi20 |
| Highlights: |
William J. Hayhoe II (born September 6, 1946) is a former American football offensive tackle in the National Football League (NFL) who played for the Green Bay Packers. Hayhoe played collegiate ball for Los Angeles Valley College and the University of Southern California before being selected by the Green Bay Packers in the fifth round of the 1969 NFL/AFL draft. He played professionally for five seasons and retired in 1973.[1]
In 1967, he played a key role in beating UCLA and helping his team win an eventual National championship, when he blocked two field goals and affected the efficiency of placekicker Zenon Andrusyshyn (he also missed a field goal and a critical extra point).[2] Then USC head coach John McKay, remarked that "Andrusyshyn kicks with low leverage,".