National Unification Day is a significant public holiday in Liberia that celebrates unity in one of Africa's oldest modern republics. The holiday is annually observed on May 14 and was established by former Liberian President William V.S. Tubman in 1960 as part of his Unification Policy aimed at minimizing the social and political divides between the descendants of the first Americo-Liberian settlers and the indigenous Liberian population.

This holiday reflects the strong aspiration of the country for national unity and equal rights for all its citizens, irrespective of their ethnical background. On this day, Liberians all around the country participate in a variety of events and activities that highlight their shared heritage and culture such as parades, concerts, and traditional ceremonies. A series of speeches and debates concerning society, culture and the country's unification policy are also common sight during the festivity.

National Unification Day serves as a reminder of the country's continuous struggles and efforts toward unity, peace, and prosperity. In spite of Liberia's diverse ethnic composition and its history marked by social tensions, the country puts much emphasis on national unity and promotes a collective Liberian identity. This holiday plays a pivotal role in this ongoing effort, stimulating a strong sense of patriotism and unity among Liberians to move forward as a unified nation.