Robert "Con" O'Neill (born 1966) is an English actor. He began his acting career at Liverpool's Everyman Youth Theatre.
He was awarded the Laurence Olivier Theatre Award in 1988 for "Best Actor in a Musical" for his performance in Willy Russell's Blood Brothers, and was nominated for Broadway's 1993 Tony Award as Best Actor (musical) for Blood Brothers.
In the 1980s he had a walk-on role in another British series, One Summer as "Jackson". He starred in Dancin' Thru the Dark, the film adaptation of Russell's Stags and Hens. In 1992, he played Cougar Glass opposite Jude Law in the world premiere of Philip Ridley's The Fastest Clock In The Universe. In 2006, he starred as Aston in a tour of Sheffield theatres' production of Harold Pinter's The Caretaker, alongside David Bradley and Nigel Harman.
In 1999 he starred in The Last Seduction II.
In 2008 he appeared in Criminal Justice a five-part TV drama on the BBC, playing the part of Ralph Stone, a solicitor. He played the part of Joe Meek in both the play and film of Meek's life, Telstar: The Joe Meek Story. In 2011, he took the role of dock worker Eddie Carbone in Arthur Miller's A View From the Bridge at the Royal Exchange Theatre in Manchester (from 18 May to 25 June 2011). Also he plays St. Paul in the 2013 mini-series The Bible.