Michael O'Brien QC (born 19 June 1954) is a British lawyer and former Labour Party politician who was the Member of Parliament (MP) for North Warwickshire from 1992 to 2010, serving in a number of cabinet posts.
In the May 2010 general election, he lost his North Warwickshire constituency to Dan Byles, the Conservative Party candidate by 54 votes.
O'Brien was re-selected as Labour's candidate in North Warwickshire for the 2015 general election in June 2013, but lost to the Conservative Party candidate Craig Tracey.