William Grey
William, Billy or Bill Grey may refer to:
British public figures
- William Grey (died 1551), MP for Reading
- William Grey, 13th Baron Grey de Wilton, military commander
- Willam Grey (died 1574), MP for Bridgnorth
- William Grey, 1st Baron Grey of Werke, MP during 1621–22
- Sir William Grey (governor), Governor of Bengal 1866–1871, Governor of Jamaica 1874–1877
- William Grey, 9th Earl of Stamford, scholar and philanthropist
- William Grey Walter, American-born neurophysiologist, cybernetician and robotician
- William G. Gray, ceremonial magician, Hermetic Qabalist and writer
Clergymen
- William Grey (bishop of Lincoln), also bishop of London
- William Grey (bishop of Ely), medieval English churchman
- William Henry Grey, African-American church leader and Reconstruction politician in Arkansas
Characters
- Bill Grey, Fox's dog friend in 1993's Star Fox characters#Bill Grey|Star Fox]
- General William Grey, General from the 1996 film Independence Day
- Billy Grey, motorcycle club president in 2009's ''List of [Grand Theft Auto: The Lost and Damned characters#Billy Grey|Grand Theft Auto: The Lost and Damned]''