| Bill Marrott | |
| Birth Name: | William J. Marrott[1] |
| Birth Date: | c. 1900 |
| Ru Position: | number eight |
| Repyears1: | 1922–23 |
| Repteam1: | Wallabies |
| Repcaps1: | 7 |
| Reppoints1: | 6 |
William J. Marrott (born c. 1900) was a rugby union player who represented Australia.
Marrott, a number eight, claimed a total of 7 international rugby caps for Australia. His brother Robert was also an Australian rugby union representative player