Oriel College is a constituent college of the University of Oxford in Oxford, England. Located in Oriel Square, the college has the distinction of being the oldest royal foundation in Oxford. In recognition of this royal connection, the college has also been historically known as King's College and King's Hall. The reigning monarch of the United Kingdom is the official visitor of the college.

The University of Oxford has thirty-nine colleges, and four permanent private halls (PPHs) of religious foundation. Colleges and PPHs are autonomous self-governing corporations within the university. These colleges are not only houses of residence, but have substantial responsibility for teaching undergraduate students. Generally tutorials and classes are the responsibility of colleges, while lectures, examinations, laboratories, and the central library are run by the university. Students normally have most of their tutorials in their own college, but often have a couple of modules taught at other colleges or even at faculties and departments. Most colleges take both graduates and undergraduates, but several are for graduates only.