Liam O'Brien (disambiguation)
Liam O'Brien is the name of:
- Liam O'Brien ( writer ) ( 1913-1996 ), American screenwriter
- Liam O'Brien ( athlete ) (born 1954 ), Irish athlete
- Liam O'Brien ( football player, 1964) (born 1964 ), Irish football player
- Liam O'Brien ( voice actor ) (born 1976 ), American voice actor
- Liam O'Brien ( football player, 1991) ( * 1991), English footballer
- Liam O'Brien ( ice hockey player ) (* 1994), Canadian ice hockey player
- Disambiguation