La Yesca is a municipality and the municipal seat of the same in the Mexican state of Nayarit. The population of the municipality was 12,025 (2005). The population of the town and municipal seat was 356 inhabitants in 2005. The population density was 7 inhabitants per square kilometer, one of the lowest in the state.
The name is derived from a species of porous and soft wood called "yesca" (English: tinder), which is found in the area.