Shield: Derived from the Provincial Seal of Ilocos Sur where the town is located.
Sun w/ Eleven Rays: Represent the 11 barangays of the Municipality.
Carabao & Plow: Symbolizes farming as the main source of livelihood of the townspeople
Rice, Corn, & Tobacco: Represent the major crops of Lidlidda.
Three Stars: Luzon, Visayas and Mindanao.