- Category : Sports-Track-and-Field
- Type : PSP
- Profile : 1/3 - Investigating / Martyr
- Definition : Split - Large
- Incarnation Cross : RAX The Four Ways 4
American shot putter. He competed in four consecutive Summer Olympics where he won two gold medals (1952, 1956) and one silver medal (1960). In his last Olympic competition (1964) he placed fourth. For all of these accomplishments, O'Brien was inducted into the U.S. Olympic Hall of Fame. He died on 21 April 2007.