Mercury, in comics, may refer to:
Mercury (Marvel Comics), a.k.a. Cessily Kincaid, a Marvel Comics character who can turn herself into a mercurial substance
Mercury (Amalgam Comics), a combination of the characters Impulse and Quicksilver made for Amalgam Comics
Hermes (Marvel Comics), an Olympian god known to the Romans as Mercury in Marvel Comics.
Max Mercury, a DC Comics superhero Speedster.
Makkari (comics), an Eternal who once used the name "Mercury" when operating as a crime fighter.
Mercury, a member of the Metal Men, DC comics characters made of elements from the periodic table.
Mercury, a member of Cerebro's X-Men.