Margaret Ellen Sawyer is a fictional character appearing in media published by DC Comics, primarily in association with Superman.

Sawyer tries to prove the police force is more efficient than a vigilante in fighting crime, and so becomes a constant thorn in Superman's side during the early days of his career, even trying to apprehend him occasionally.

She married fellow police officer James Sawyer, although she was uncertain about her own sexual identity, and they had a daughter named Jamie.

[3] In Action Comics #600, Lex Luthor, then a corporate executive, met with Maggie to get her to stop investigating his activities and tries to blackmail her with documentation regarding her sexuality, which would discredit her and taint her career.

When Luthor injures himself and flees the room due to kryptonite poisoning, Maggie is tempted with taking the evidence left behind on his desk, but decides against it.

[5] Maggie Sawyer is the main character in the four-issue limited series comic title Metropolis SCU written by Cindy Goff, penciled by Peter Krause and inked by José Marzan Jr., which was published from November 1994 to February 1995.

Following the events of Infinite Crisis, Harvey Bullock discovers corruption in the GCPD apparently all the way up to Commissioner Michael Akins.

[8] In Week Twelve, Maggie yells at Montoya for busting up a cover for Intergang, closing all leads to the criminal group in Gotham City.

The prequel event Zero Year establishes she and Kate had first crossed paths when Maggie, as a Metropolis police officer, arrived in Gotham as backup support for an approaching hurricane; the two share a brief glance in precinct headquarters after Kate gets treatment for minor injuries she received while foiling a burglary during the storm.