Mark Allen

• Mark Allen (businessman), former British spy turned businessman and lecturer
• Mark Allen (triathlete), American world champion triathlete
• Bull Allen (rugby union), New Zealand international rugby football player
• Mark Allen (snooker player), Northern Irish snooker player
• Mark Allen (footballer), former Burnley, Tranmere Rovers and Runcorn football player
• Mark Allen (software developer), computer game programmer and designer
• Mark Allen (DJ), British deejay and producer
• Mark Allen (politician), American politician from Oklahoma
• Mark G. Allen, professor specializing in microfabrication at the Georgia Institute of Technology
• Mark S. Allen, American television host
• Mark W. Allen, American lumber dealer and politician
• Mark Johnston-Allen, snooker player
• Mark Allen, founder of Machine Project