William Allan

• Bill Allen (disambiguation)
• George William Allan
• George William Allan (Manitoba politician)
• Will Allen (disambiguation)
• William Allan (British Army officer)
• William Allan (English politician)
• William Allan (Queensland politician)
• William Allan (banker)
• William Allan (classicist)
• William Allan (geneticist)
• William Allan (painter)
• William Allan (trade unionist)
• William Allan of Glen
• William Allen (disambiguation)
• William Evan Allan
• William FitzAlan, Lord of Oswestry
• William Van Alen
• Willie Allan