The Calouste Gulbenkian Foundation (Portuguese: Fundação Calouste Gulbenkian), commonly referred to simply as the Gulbenkian Foundation, is a Portuguese institution dedicated to the promotion of the arts, philanthropy, science, and education. One of the wealthiest charitable foundations in the world, the Gulbenkian Foundation was founded on 18 July 1956 according to the last will and testament of Calouste Sarkis Gulbenkian, an Armenian Portugal-based oil magnate who bequeathed his assets to the country in the form of a foundation.

Gulbenkian had one of the largest private art collections in Europe, which is housed in the foundation's Calouste Gulbenkian Museum in Lisbon. The foundation hosts numerous institutions and initiatives including the Gulbenkian Orchestra, Gulbenkian Science Institute, Gulbenkian Prizes and the Gulbenkian Commission.

Located in Lisbon (civil parish of Avenidas Novas), the Foundation's premises opened in 1969 and were designed by Ruy Athouguia, Pedro Cid, and Alberto Pessoa. In addition to Foundation offices, the complex includes an auditorium, exhibition space, congress facilities, and a large building designed specifically to house and display Museum and art library. These are set in Gulbenkian Park, which was designed by Ribeiro Telles. In 1983, the Modern Art Centre was added at one end of the park.

The Calouste Gulbenkian Museum (Portuguese: Museu Calouste Gulbenkian), founded in conformity with his last will and testament, accommodates his collection of mostly ancient and classical art, but including some individual modern pieces.

The Instituto Gulbenkian de Ciência (IGC, a science institute) is not situated on the same premises but its own complex in Oeiras (outskirts of Lisbon), near the palace of the Marquis of Pombal. The institute is an international centre for biological and biomedical research and graduate training. Founded in 1961, the IGC is organised in small independent research groups that work in an environment designed to encourage interactions with minimal hierarchical structure. The scientific programme is multidisciplinary, including Cell and Developmental biology, Evolutionary biology, Immunology, Host-pathogen interaction, Disease Genetics, Plant Biology, Neurosciences, Theoretical and Computational biology.

The Gulbenkian Orchestra (Portuguese: Orquestra Gulbenkian) is a Portuguese symphony orchestra based in Lisbon. The orchestra primarily gives concerts at the 1,228-seat Grande Auditório (Grand Auditorium) of the Foundation's main premises. Established in 1962 as the Orquestra de Câmara Gulbenkian (Gulbenkian Chamber Orchestra) with 12 musicians, it has subsequently expanded in size and took on its current name in 1971.

Gulbenkian ballet was a Portuguese classical dance troupe created in 1965 by the Foundation as Centro Português do Bailado. Its programme directors were Walter Gore (1965–1969), Milko Sparembeck (1969–1975), Jorge Salavisa (1977–1996), Iracity Cardoso (1996–2003) and Paulo Ribeiro (2003–2005). The project was terminated in 2005.

Gulbenkian Choir (Portuguese: Coro Gulbenkian) is a musical choir project established by the Foundation in 1964 as the Gulbenkian Chamber Choir (Coro de Câmara Gulbenkian) directed by Olga Violante (1964–1969). Since then the choir made up of an average 100 members is directed by Michel Corboz.