Seamus O'Neill Filmography
- Actor (49 credits)
- Adult Babies (2017) David
- Dark Angel (2016) William Calcraft
- The Smoke (2014) Mr. Burnham
- The Herd (2014) Suit
- Electricity (2014) Homeless Hostel Manager
- The List (2013) Jeff Bowler
- Stella (2012) Benny the Burger
- Sightseers (2012) Mr. Grant
- Stepping Up (2012) Ticket Inspector
- Inbred (2011) Jim
- War Horse (2011) Devon Farmer #1
- Mount Pleasant (2011) Stevie
- Pelican Blood (2010) Poacher «Kevin»
- This Is England '86 (2010) Man at Window
- Le Donk & Scor-zay-zee (2009) Le Donk's Lodger
- Boy Meets Girl (2009) Barry
- Murder in Mind (2009) Detective
- Summer (2008) Mr. Roberts
- Mobile (2007) Passenger 1
- The Good Samaritan (2007) Frank Englethorpe
- Strictly Confidential (2006) D.I. Standring
- Life on Mars (2006) Terry Haslam
- Vincent (2005) Joe Morgan
- Dead Man's Shoes (2004) Big Al
- Island at War (2004) Harry Redford
- Yasmin (2004) Pub landlord
- Gifted (2003) Roy
- The Royal (2003) Len Edwards
- My Kingdom (2001) Snowy
- Fat Friends (2000) Insp. Stuart Hughes
- Clocking Off (2000) Big Bloke
- Always and Everyone (1999) Gary
- City Central (1998) Leonard Harris
- Wing and a Prayer (1997) Mr. McNair
- Reckless (мини-сериал) (1997) Custody Sgt.
- Cold Feet (1997) Pub Landlord
- Bob's Weekend (1996) Colin
- The Glass Virgin (1995) Captain Weir
- The Knock (1994) DS Trevor Cowley
- Cracker (1993) D.C. Jones
- Covington Cross (1992) Henchman 2
- Civvies (1992) Harry Travers
- Prime Suspect (1991) DC Caplan
- Spender (1991) Kenton
- Bad Weekend (1991) not listed in credits
- Birds of a Feather (1989) Kenny
- The Contract (1988) Knowles
- Auf Wiedersehen, Pet (1983) German Worker
- Gaslighting Bill