51°31′16.3″N 0°8′42.2″W / 51.521194°N 0.145056°W
| 66 Portland Place | |
|---|---|
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| General information | |
| Architectural style | Art Deco, Neoclassical |
| Location | Portland Place |
| Town or city | London |
| Country | United Kingdom |
| Current tenants | Royal Institute of British Architects |
| Construction started | 1932 |
| Completed | 1934 |
| Cost | Approx |
| Design and construction | |
| Architect(s) | George Grey Wornum |
66 Portland Place is an office building in Marylebone in Central London, near the boundary with Fitzrovia. Located on the corner of Portland Place and Weymouth Street, it serves as the headquarters of the Royal Institute of British Architects ("RIBA").