The Institute of Advanced Architectural Studies (IoAAS), University of York, United Kingdom, was a post-graduate institute primarily specialising in providing mid-career education and research, largely for architects and others in related professions. The history and activities of the IoAAS are recorded by the Borthwick Institute for Archives, University of York, who also hold much documentary material. The Institute's activities were also recorded in the Vice Chancellor's Annual Reports to the University Court, typically. The Institute took a broad view of the nature of architecture that extended to management, building science, design problems in specialized building types, building economics, architectural history, conservation, landscape and townscape. Its target audience was the architectural and allied professions.

The Institute was constituted well before the university, being established by the York Academic Trust. It had its origins in a summer school for architectural students first held in 1949, followed by the holding of short residential courses for architects and other related disciplines. In 1961 the Institute was incorporated into the newly established University of York, moving into King’s Manor in 1966. Early proposals to establish an undergraduate school fell through, and the Institute remained a post-graduate establishment.

Through the University period the IoAAS had four Directors:

Professor Patrick Nuttgens 1962 to 1968

Professor Robert Macleod 1969 to 1974

Professor Douglass Wise 1975 to 1992

Professor John Worthington 1992 to 1997

The Assistant Director for most of this period was Stuart Sutcliffe. The Institute was widely supported by over thirty leading institutions, such as the RIBA (Royal Institute of British Architects), the RICS (Royal Institution of Chartered Surveyors) and the DoE (UK Department of the Environment). The IoAAS was closed in 1997, following a decline in demand especially for its short course programme, which in turn led to financial shortfalls.