William Tyrrell

• William Tyrrell (bishop), first Anglican bishop of Newcastle, New South Wales
• William Tyrrell, [1st Baron Tyrrell], British diplomat
• William Tyrrell (RAF officer), Irish rugby international, military officer, and surgeon to George VI
• George William Tyrrell, Union Army officer
• Disappearance of William Tyrrell, a missing boy from Australia
• W. C. Tyrrell, Texas business magnate