McComas is a surname. Notable people with the surname include:
J.E. McComas, California State Senator, 1888 - 1892; California gubernatorial candidate, 1896
Campbell McComas, an Australian comedian, writer, and actor
Daniel F. McComas, a politician from North Carolina
David J. McComas, an American space scientist
James Douglas McComas, former president of three U.S. universities.
J. Francis McComas, an American science fiction editor
Kendall "Breezy Brisbane" McComas, an American child actor
Lorissa McComas, an American nude model
Louis E. McComas, a politician from Maryland
See also:
Clan MacThomas, a Scottish clan of the McComases