William Shanahan
| Personal information | |
|---|---|
| Nationality | Irish |
| Born | 22 March 1897 Kilcarney, County Tipperary, Ireland |
| Died | 29 May 1954 (aged 57) County Tipperary, Ireland |
| Sport | |
| Sport | Athletics |
| Event | Decathlon |
William Shanahan (22 March 1897 – 29 May 1954) was an Irish athlete. He competed in the men's decathlon at the 1924 Summer Olympics.