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.

He also came up with the idea of the iPhone[3] and led 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.

In 1996 he co-founded RealNames, a URL translation service which closed in 2002.

He was the president and CEO of Fotopedia, a collaborative photo encyclopedia, and co-founder of The Iris Foundation, a nature conservancy organization.