Don McMillan is an American comedian and former engineer based in the San Francisco Bay Area.

McMillan earned a Bachelor of Science in electrical engineering from Lehigh University and a Master of Science in electrical engineering from Stanford University.

[1] McMillan worked AT&T Bell Laboratories, where he was a part of the team that designed the world's first 32-bit microprocessor.

He then moved to the Silicon Valley, where he worked at VLSI Technology as a computer chip designer.

[4][5] He has also acted in and/or written episodes on Star Trek: Voyager, Babylon 5 and multiple other movies.