| Bill Kellagher | |
| Number: | 74 |
| Position: | Fullback Safety |
| Birth Date: | August 13, 1920 |
| Birth Place: | Locust Gap, Pennsylvania, U.S. |
| Death Place: | DeBary, Florida, U.S. |
| Height Ft: | 5 |
| Height In: | 11 |
| Weight Lb: | 205 |
| High School: | Ashland (Ashland, Pennsylvania) |
| College: | Fordham |
| Undraftedyear: | 1946 |
| Pastteams: |
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| Highlights: |
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| Statleague: | AAFC |
| Statlabel1: | Rushing yards |
| Statvalue1: | 518 |
| Statlabel2: | Rushing average |
| Statvalue2: | 4.2 |
| Statlabel3: | Rushing touchdowns |
| Statvalue3: | 4 |
| Statlabel4: | Receptions |
| Statvalue4: | 5 |
| Statlabel5: | Receiving yards |
| Statvalue5: | 58 |
| Statlabel6: | Interceptions made |
| Statvalue6: | 6 |
| Pfr: | K/KellBi20 |
William Michael Kellagher (August 13, 1920 – May 11, 2003) was an American professional football fullback and safety who played for the Chicago Rockets of the All-America Football Conference (AAFC).
Kellagher played for the Rockets from 1946 to 1948.[1] In 1947, along with Tommy Colella and Len Eshmont, Kellagher co-led the AAFC with 6 interceptions.[2] Also in 1947, Kellagher ended Cleveland Browns quarterback Otto Graham's streak of 91 consecutive pass attempts without an interception, a professional football record at the time.[3]