Are mark and laurie metcalf related?

Yes, Mark Metcalf and Laurie Metcalf are related in that they share the same last name, but they are not directly related as family. Mark Metcalf is an actor known for his roles in "Animal House" and "Buffy the Vampire Slayer," while Laurie Metcalf is an actress known for her work on "Roseanne" and "The Big Bang Theory." They have no familial connection beyond their shared surname.