Brian Alexander Gallant is a Canadian politician who served as the 33rd premier of New Brunswick from October 7, 2014, until November 9, 2018. Of Acadian and Dutch descent, Gallant practised as a lawyer before winning the Liberal leadership in October 2012, securing the riding of Kent in a by-election on April 15, 2013, shortly followed by his swearing in as Leader of the Opposition. After the 2014 election, in which the Progressive Conservative government of David Alward was defeated, Gallant was sworn in as Premier at the age of 32.

The Leader of the Opposition in the Legislative Assembly of the Province of New Brunswick, Canada is a title traditionally held by the leader of the largest party not in government.