The government of Lenoir City is based upon the Mayor-Alderman form of government. This form of government was established in 1907 when the City was re-incorporated into what is now known as the modern City of Lenoir City.

The City is governed by a seven-member Board of Mayor and Aldermen, elected at-large and on a non-partisan basis for four-year staggered terms. Elections are held in November, the first Tuesday of the month, during even-numbered years.

The current board of Mayor and Aldermen is composed of the following: Mayor: Tony R. Aikens, Council members: Todd Kennedy, James Brandon, Mike Henline, Jim Shields, Eddie Simpson, and Jennifer Wampler.