John Michael David Coey (born 24 February 1945), known as Michael Coey, is a Belfast-born experimental physicist working in the fields of magnetism and spintronics.He got a BA in Physics at Jesus College, Cambridge (1966), and a PhD from University of Manitoba (1971) fora thesis on "Mössbauer Effect of 57Fe in Magnetic Oxides" with advisor Allan H. Morrish. Trinity College Dublin (TCD), where he has been in the physics department since 1978, awarded him ScD (1987) and the University of Grenoble awarded him Dip. d'Habilitation (1986) and an honorary doctorate (1994). He served as Erasmus Smith's Professor of Natural and Experimental Philosophy at TCD from 2007 to 2012.