Bertrand Serlet, born 1960, is a French researcher. PhD in Computer Science at Université Paris-Sud 11 (Université d'Orsay), he worked first at the Institut national de recherche en informatique et en automatique (INRIA). He left France for USA in 1985.

He is the former Senior Vice President of Software Engineering at Apple Inc, where he worked from 1997 to 2011. He succeeded Avie Tevanian to the position in July 2003. In this position he has been primarily responsible for the release of Mac OS X Tiger, Leopard and Snow Leopard.

Before Apple he worked at Xerox PARC and NeXT.

Serlet holds a doctorate in Computer Science from the University of Paris-Sud, France.

He spoke at WWDC 2006 on the perceived similarities between Mac OS X Tiger and Windows Vista, including the comparison of Apple's Aqua interface and Microsoft's Aero interface. Serlet poked fun at the apparent visual similarities and referenced a 2004 WWDC banner that read, "Redmond, start your photocopiers" — a reference to Microsoft headquarters which is in Redmond, Washington. He also spoke at WWDC 2009 and gave an in-depth demonstration of Snow Leopard, which included further references to Microsoft's Windows operating system — claiming that Windows 7 is just another version of their highly criticized Vista release, citing the ongoing use of the Windows registry, DLLs, the User Account Control subsystem and existence of an interactive disk defragmenter.