Martin O'Brien is a former Canadian politician who was elected to the Newfoundland and Labrador House of Assembly in the 1976 by-election.
He represented the electoral district of Ferryland as a member of the Liberal Party of Newfoundland and Labrador.
[1] O'Brien initially ran in the general election, losing to Progressive Conservative Charlie Power by eight votes; the results were later challenged in court and nullified.
O'Brien did not re-offer as a candidate in this election and Power won by a larger margin.
[1] This article about a Newfoundland and Labrador politician is a stub.