Bill Fernandez is a user interface architect and inventor who was Apple Computer's first employee when they incorporated in 1977 and is Apple employee # 4. He worked on both the Apple I and Apple II personal computers, and in the 1980s was a member of the Apple Macintosh development team. He contributed to several user interface aspects of the classic Mac OS, QuickTime and HyperCard and owns a user interface patent granted in 1994. He is also credited with introducing fellow Homestead High School student Steve Jobs to his friend (and Homestead alum) Steve Wozniak to each other.
Fernandez is portrayed by the actor Victor Rasuk in the 2013 film Jobs.