Scooby Apocalypse: Volume 4 is a trade paperback collecting issues 19-24 of Scooby Apocalypse. It hit the shelves on September 19, 2018 by DC Comics, followed by a digital release on September 25 of the same year.
- Child's Play!
- Secret Squirrel!: Broken!
- A Scooby-Doo Christmas
- Secret Squirrel: Deadly Reunion!
- Secret Squirrel!: Bikini Bloodbath!
- Uncivil War!
- Secret Squirrel!: Toolbooth Terror!
- A Dog and His Boy!
- Secret Squirrel: No Noose is Good Noose!
- Prelude to Disaster!
- Secret Squirrel: Betrayed!
- The cover is from the variant of issue 21.