Martin O'Brien may refer to:
- Martin O'Brien (artist), British performance artist
- Martin O'Brien (journalist), Irish journalist and author.
- Martin O'Brien (footballer) (1875–1946), Australian rules footballer
- Martin O'Brien (humanitarian) (born 1964), human rights activist and charity administrator in Northern Ireland
- Martin O'Brien (hurler) (1885–1958), Irish hurler
This disambiguation page lists articles about people with the same name.
If an internal link led you here, you may wish to change the link to point directly to the intended article.
If an internal link led you here, you may wish to change the link to point directly to the intended article.