McNairy is a surname. Notable people with the surname include:
Boyd McNairy (1785–1856), American physician Francine G. McNairy, American academic administrator John McNairy (1762–1837), United States federal judge in Tennessee Mark McNairy (born 1961), American fashion designer Nathaniel A. McNairy (1779–1851), American planter and enslaver Scoot McNairy, American actor
See also McNairy, Tennessee, an unincorporated community in the United States McNairy County, Tennessee, county located in the U.S. state of Tennessee