The olive branch is one of the most widely recognized symbols of peace, reconciliation, and hope, and in heraldry it carries many of those ancient associations into formal armorial design. In coats of arms, an olive branch may signify concord, mercy, wisdom, prosperity, and the desire for peaceful settlement after conflict. Its meaning is strengthened by long classical and biblical traditions. In the Book of Genesis, the dove returning to Noah with an olive leaf became a sign that the floodwaters had receded and that renewal was possible. In Greek and Roman culture, the olive was linked with Athena, civic order, victory, cultivation, and honorable achievement, making it a fitting emblem for diplomacy, learning, and stable government.

Heraldically, the olive branch is most often shown as a green branch with narrow leaves, sometimes fructed with olives, and it may appear as a charge, crest, badge, or supporter attribute. When placed with a dove, it clearly emphasizes peace. When paired with a sword, spear, or military emblem, it may express the balance between readiness for defense and preference for peace. In civic arms, it can indicate agricultural abundance, Mediterranean geography, local olive production, or a community’s identity as a place of settlement and prosperity. Olive wreaths, like laurel wreaths, may also suggest honor, triumph, and public virtue, though with a gentler and more conciliatory tone.

Well-known examples include the Great Seal of the United States, where the eagle holds an olive branch to symbolize the nation’s preference for peace while also holding arrows for defense, a design explained by the U.S. Department of State. Olive branches also appear in the emblem of the United Nations as part of a wreath of peace, described by the United Nations. For broader heraldic context and visual comparisons, see The Heraldry Society and Heraldry of the World.