John McMahon

• Jack McMahon
• John A. McMahon
• John E. McMahon
• John J. McMahon (architect)
• John J. McMahon (bishop)
• John McMahon (Australian footballer, born 1900)
• John McMahon (Australian footballer, born 1935)
• John McMahon (Australian politician)
• John McMahon (Surrey and Somerset cricketer)
• John McMahon (footballer, born 1949)
• John McMahon (footballer, born 1964)
• John McMahon (footballer, born 1965)
• John McMahon (hurler)
• John McMahon (wrestler)
• John N. McMahon
• Johnny McMahon
• Johnny McMahon (English footballer)
• Sir John McMahon, 1st Baronet