Owlman (Thomas Wayne, Jr.) is a fictional character appearing in comic books published by DC Comics. A supervillainous alternate-universe counterpart of Bruce Wayne / Batman, he is depicted as the adult version of Wayne's deceased older brother, who in other universes dies as a child, before Bruce is born. In The New 52, the primary continuity Owlman, originally depicted as the asylum-bound Boomerang Killer, is retroactively revealed to be still alive, stolen from his parents as a child, and working in the service of the Court of Owls under the name Lincoln March.

Owlman is voiced by Diedrich Bader and James Woods in the 2008 animated series Batman: The Brave and the Bold and the 2010 animated feature film Justice League: Crisis on Two Earths respectively. Jayda Eyles portrays a young gender-swapped version of the character, Samantha Thomas Wayne, in Pennyworth in a recurring role. Damon Dayoub portrays Lincoln March in the 2023 television series Gotham Knights.