Dr. Boyd McNairy (1785 – November 21, 1856) was a physician and an influential early settler of Nashville, Tennessee, United States.

He was influential in local politics; although never a candidate himself, he worked to oppose the election of Andrew Jackson to the Presidency and later to promote the nascent Whig Party.

[8] When a new facility was built along the Murfreesboro Pike in 1848 under the influence on the legislature of Dorothea Dix, McNairy served as superintendent in 1849.

An obituary in the Southern Journal of the Medical and Physical Sciences stated, "He had been engaged actively in the practice of medicine for a half century in the city of Nashville, highly esteemed for his social qualities, his gentlemanly deportment and scientific attainments.

[11] Indices of early printing in Tennessee credit McNairy with two publications created for the 1828 U.S. presidential election cycle, both documents attack the character of Andrew Jackson.

[12][13] McNairy ran against Jackson supporter William Sublett of Rutherford County for presidential elector from the seventh district of Tennessee in 1828.

during the 1840 presidential election cycle,[17] and Henry Clay stayed at McNairy's house during a political convention that year.