The Leader of the Opposition in Newfoundland and Labrador is a title traditionally held by the leader of the largest party not in government in the Newfoundland and Labrador House of Assembly. This list is incomplete
- ^ Ottenheimer served from 1967 to 1969 following Murphy's loss of his seat in the 1966 election.[1]
- ^ Acting for Progressive Conservative Party leader Frank Moores who was elected party leader but did not gain a seat in the House of Assembly until 1971.
- ^ Rowe defeated Roberts for the Liberal leadership in October 1977 and entered the House via a by-election in December. It is unclear who was Leader of the Opposition in the interim.
- ^ Neary became Opposition Leader after Liberal leader Sterling lost his seat in the 1982 general election. He subsequently became interim party leader as well.
- ^ Simmons was not party leader. He was Opposition Leader between the time that Leo Barry was deposed as Liberal leader and new leader Clyde Wells' acquisition of a seat via a by-election.