Jean-Marie Hullot (February 16, 1954 – June 17, 2019) was a French computer scientist and programmer who authored important programs for the original Macintosh, NeXTSTEP and Mac OS X platforms. These include the SOS Interface for the Mac,^[1] which later became Interface Builder for NeXTSTEP (1985),^[2] and later still evolved into an important part of Mac OS X. He also came up with the idea of the iPhone^[3] and lead the iCal and iSync development teams for Mac OS X (2002).^[4]

In 1981, Jean-Marie Hullot received a Ph.D. in computer science from the University of Paris at Orsay,^[5] where his adviser was Gérard Huet. He was a researcher at INRIA from 1979 to 1985, when he joined NeXT. In 1996 he co-founded RealNames, a URL translation service which closed in 2002. He worked as CTO of Application Division at Apple Inc. from 2001 to 2005. He was the President and CEO of Fotopedia, a collaborative photo encyclopedia, and co-founder of The Iris Foundation, a nature conservancy organization.

He died on June 19, 2019.^[3]