Matt McGinnis (born May 9) is a Writer and Producer at Alternaversal Productions.

Joel Hodgson met Matt McGinnis at a Movie Riffing Camp that Joel offered at Bucks County Community College in 2012. Matt impressed Joel with his talent, creativity, and attentiveness. Joel later hired Matt as an assistant at Alternaversal, and Matt aided Joel when Joel traveled to conventions and other events.

When the first crowd-funded revival of Mystery Science Theater 3000 began production, Matt took on many responsibilities. He screens all of the possible movies (and later shorts), and he also works closely with Shout! Factory to acquire film rights. Additionally, Matt helps to run the Writer's Rooms, and he wrote for several episodes of Season 11 and 12, as well as the live tours and the comic book. He also co-ordinates with vendors and artists during production and post-production.

He appeared briefly in Experiment #1112 as Matt Claude Van Damme. He also provided the human body for the "shadowrama" material shown during the Bring Back MYSTERY SCIENCE THEATER 3000 campaign and the MIGIZI shorts. He later moderated the livestream events for the second Kickstarter campaign and the Mindless Summer series.

He joined Joel Hodgson on the April 12th, 2021 episode of The Flop House podcast.