The 2005 William Hill Greyhound Derby took place in June and July with the final being held on 2 July 2005 at Wimbledon Stadium. The winner Westmead Hawk received the title and £100,000 in prize money.

Westmead Hawk was a black male greyhound. He was a two-time winner of the English Greyhound Derby in 2005 and 2006, and has drawn comparisons with Mick the Miller and horse Red Rum. Westmead Hawk was the father to two English Greyhound Derby winners – Taylors Sky 2011 and Sidaz Jack 2013.