A list of events that occurred on May 13 related to Six Flags.

• 1995 – The Batman Forever Stunt Show opens at Six Flags Great Adventure.
• 2000 – Superman: Ride of Steel opens at Six Flags America.
• 2006 – Tatsu opens at Six Flags Magic Mountain.
• 2006 – Goliath opens at La Ronde.
• 2015 – Batman: The Ride has a soft opening at Six Flags Fiesta Texas.
• 2022 - Pirates of Speelunker Cave has a soft opening at Six Flags Over Texas.