William Gross
William Gross, William Gros or Bill Gross may refer to:
- William Hickley Gross, American member of the Congregation of the Most Holy Redeemer, prelate of the Roman Catholic Church
- William Gross , last person publicly executed in Philadelphia
- William le Gros, Earl of York, the Count of Aumale, Earl of York, and Lord of Holderness
- William Gros, French football striker
- William G. Gross, American police officer, former commissioner of the Boston Police Department
- Bill H. Gross, American investor, fund manager, and philanthropist who co-founded Pacific Investment Management Company
- Bill T. Gross, American businessman, founder of Idealab, GNP Audio Video and eSolar