| Hercules Beresford-Knox | |
| Full Name: | Hercules John Beresford-Knox |
| Birth Date: | 2 August 1880 |
| Birth Place: | Gortnor Abbey, County Mayo, Ireland |
| Death Place: | Liverpool, England |
| Position: | Forward |
| Repyears1: | 1904–08 |
| Repcaps1: | 10 |
| Reppoints1: | 0 |
Hercules John Beresford-Knox (2 August 1880 — 10 March 1975) was an Irish international rugby union player.
Born in County Mayo, Beresford-Knox was educated at the High School, Dublin, and Trinity College Dublin, where he studied medicine.[1] He played varsity rugby and also competed for Lansdowne. From 1904 to 1908, Beresford-Knox was capped 10 times as a forward for Ireland, which included a match against the touring 1905-06 All Blacks.[2]
Beresford-Knox had a medical practice on Rodney Street in Liverpool.[3]