The article attempts to probe veteran diplomacy with the case of Türkiye and adopts its meaning from the distinct historical case of the Korean War. Veteran diplomacy gets attention as a means of new diplomacy as the changes in global political and economic order have brought limitations to state-centric diplomatic relations since the late 20th century. Veteran diplomacy can be utilized as an opportunity to expand South Korea’s soft power in the new public diplomacy era of the 21st century. It engages diverse diplomatic actors and interacts with war veterans of the UN allied nations based on diplomatic security policies. It led to the effect of public diplomacy via open and multilateral communication between the countries and creating amicable and favorable environments to strengthen ties as well as improve South Korea’s reputation in international society. It also paves the way for security cooperation with Türkiye.