Lancing is an unincorporated community in Morgan County, Tennessee, United States. Lancing is located along Tennessee State Route 62 and the Norfolk Southern Railway 3.35 miles (5.39 km) west-northwest of Wartburg, and northeast of the Catoosa Wildlife Management Area. Lancing has a post office with ZIP code 37770.
Lancing was settled in the 1860s, and was originally known as "Kismet." In 1879, the Cincinnati Southern Railway constructed a rail line through the area, and named the Kismet rail station "Lancing." The post office applied the name Lancing to the entire community in 1894. Within a few years of the railroad's arrival, Lancing was home to a store, hotel, two churches, and two saloons.