Mallon is a surname that may refer to:
- Andy Mallon, Irish Gaelic footballer
- Bill Mallon
- Brian Mallon
- Dave Mallon
- George Mallon
- George H. Mallon (1877–1934), officer in the United States Army who received the Medal of Honor for his actions during the World War I.
- Gui Mallon
- Henry Neil Mallon
- Jim Mallon
- Mary Mallon
- Meg Mallon
- Ray Mallon
- Ryan Mallon
- Seamus Mallon (born August 17, 1936), Irish politician and former Deputy Leader of the nationalist Social Democratic and Labour Party in Northern Ireland
- Thomas Mallon
- Feardorcha Ó Mealláin
- Henry Ó Mealláin
- Tarlach Ó Mealláin
Read more about Mallon: Other Uses