| William Kidd | |
| Full Name: | Frederick William Kidd |
| Birth Date: | 3 May 1857 |
| Birth Place: | Newry, County Down, Ireland |
| Death Place: | Dublin, Ireland |
| Position: | Three-quarter |
| Repyears1: | 1877–78 |
| Repcaps1: | 3 |
| Reppoints1: | 0 |
Frederick William Kidd (3 May 1857 — 5 September 1917) was an Irish international rugby union player.
Born in Newry, County Down, Kidd attended Dundalk Academy and Trinity College Dublin. He played his rugby as a three-quarter and had considerable pace, with the 120 yards race being his specialty in varsity athletics. A Lansdowne player, Kidd was capped three times for Ireland during this period.[1]
Kidd was a consulting surgeon and master at Coombe Lying-In Hospital in Dublin. He served as president of the Leinster Branch of the British Medical Association.[2]