William Grant "Bill" Moggridge, RDI (25 June 1943 – 8 September 2012) was a British designer, author and educator who cofounded the design company IDEO and was director of the Cooper-Hewitt, National Design Museum in New York. He was a pioneer in adopting a human-centred approach in design, and championed interaction design as a mainstream design discipline (he is given credit for coining the term).