Jaynes is a surname, and may refer to

• Allison Jaynes, American space physicist

• Cindy Jaynes (born 1959), American rear-admiral

• Dwight Jaynes, American sports journalist

• Edwin Thompson Jaynes (1922–1998), American physicist and theorist of probability

• Jeremy Jaynes (born 1974), American convicted spammer

• Julian Jaynes (1920–1997), American psychologist

• Leigh Jaynes, American freestyle wrestler

• Roderick Jaynes, name used by the Coen brothers

See also