1812 New Hampshire gubernatorial election
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| County results Plumer: 50–60% 60–70% Gilman: 50–60% | ||||||||||||||||||||
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| Elections in New Hampshire | 
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The 1812 New Hampshire gubernatorial election was held on March 10, 1812.
Incumbent Governor John Langdon did not run for re-election.
Democratic-Republican candidate William Plumer defeated Federalist candidate and Former Governor of New Hampshire John Taylor Gilman.
Since no candidate received a majority in the popular vote, Plumer was elected by the New Hampshire General Court per the state constitution.