Sadie Morgan (born 28 February 1969) is an English designer.
In 1995 she founded dRMM, the RIBA Stirling Prize winning architecture practice, with Alex de Rijke and Philip Marsh.
Morgan is the chair of the Independent Design Panel for High Speed Two (HS2) UK, and a board member of both the National Infrastructure Commission (NIC) UK and the Thames Estuary 2050 Growth Commission.
She is one of the Mayor's Design Advocates for the Greater London Authority (GLA), a Non-Executive Director of the Major Projects Association, a Professor of Professional Practice at London University of Westminster, and a Fellow of the UK Royal Society for the Encouragement of Arts, Manufactures and Commerce.