William Gallagher

• Bill Gallagher (baseball)
• Bill Gallagher (inventor)
• Billy Gallagher (chef)
• Billy Gallagher (footballer)
• Billy Zero
• Liam Gallagher
• Rory Gallagher
• William Davis Gallagher
• William Gallacher (disambiguation)
• William Gallagher (baseball)
• William Gallagher (civil servant)
• William Gallagher (politician)
• William Gallagher (writer)
• William J. Gallagher (colonel)
• William M. Gallagher