"Lord of the Iron Islands" refers to the title held by the ruler of the Iron Islands, a group of rocky islands located off the western coast of Westeros in the fictional world of A Song of Ice and Fire. The Iron Islands are known for their harsh environment, seafaring culture, and the practice of raiding. The title is traditionally held by the head of the Greyjoy family, who are known for their motto, "We Do Not Sow." The Iron Islands have a unique political structure, with each island having its own local leaders, but ultimately recognizing the authority of the Lord. The ruling lord is expected to lead raids and maintain the traditions of the Old Way, which emphasizes strength and independence. The current Lord of the Iron Islands in the series is Euron Greyjoy, who seeks to expand his power and influence across Westeros.