| Birth Date: | 6 December 1891 |
| Birth Place: | Poplar, London, England |
| Death Place: | Sawtry, England |
| Club: | Paisley Swimming Club |
William Peacock (6 December 1891 – 14 December 1948) was a Scottish water polo player who competed in the 1920 Summer Olympics for Great Britain. He was part of the British team, which was able to win the gold medal.[1]