A by-election was held in Mid Ulster on 8 May 1956 because both candidates in the 1955 Mid Ulster by-election had been disqualified. Tom Mitchell was disqualified from assuming office because he was a convicted felon. Charles Beattie was awarded the seat but he was also disqualified because he held an office of profit under the Crown. The by-election was won by the Independent Unionist candidate George Forrest.