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.