Lequio Tanaro is a comune (municipality) in the Province of Cuneo in the Italian region Piedmont, located about south of Turin and about northeast of Cuneo. As of 31 December 2004, it had a population of 731 and an area of .
Lequio Tanaro borders the following municipalities: Bene Vagienna, Dogliani, Farigliano, Monchiero, Narzole, Novello, and Piozzo.