The University of Costa Rica is a public university in the Republic of Costa Rica, in Central America. Its main campus, Ciudad Universitaria Rodrigo Facio, is located in San Pedro Montes de Oca, in the province of San José. It is the oldest and largest institution of higher learning in Costa Rica, originally established as the Universidad de Santo Tomás in 1843. Approximately 45,000 students attend UCR throughout the year.

A public university or public college is a university or college that is owned by the state or receives significant funding from a government. Whether a national university is considered public varies from one country to another, largely depending on the specific education landscape. In contrast a private university is usually owned and operated by a private corporation. Both types are often regulated, but to varying degrees, by the government.