Mega Zeph, Wooden roller coaster in Eastern New Orleans, Louisiana, US.

Mega Zeph was a wooden roller coaster at Six Flags New Orleans, built by Custom Coasters International with a steel structure supporting a wooden track. Its 1,219.2 m (4,000 ft) circuit reached a height of 33.5 m (110 ft) and a top speed of 91.7 km/h (57 mph). The lift hill culminated in a first drop toward a high-speed turnaround near the lake's edge.

Mega Zeph opened with Jazzland on May 20, 2000, after a topping-out ceremony on September 10, 1999. It closed when Hurricane Katrina flooded the park in August 2005. A fire damaged a section on January 18, 2025, and the coaster was torn down on February 2, 2025.

Mega Zeph appeared in the 2013 film Percy Jackson: Sea of Monsters, where Six Flags New Orleans stood in for the fictional Circeland park on the island of Polyphemus. For the shoot, the coaster was lined with lights and a car was sent through the frame. The neon sign from its entrance was later preserved by the National Roller Coaster Museum and Archives in Plainview, Texas.

The coaster was demolished on February 2, 2025, after a fire on January 18, 2025, so no structure remains on the site. The only train was sent to Six Flags St. Louis and is stored under Batman: The Ride. The neon entrance sign is preserved at the National Roller Coaster Museum and Archives in Plainview, Texas.

The only train was sent to Six Flags St. Louis, where it is stored beneath Batman: The Ride. The ride's neon entrance sign was preserved by the National Roller Coaster Museum and Archives in Plainview, Texas. A section of the coaster caught fire on January 18, 2025, and the structure was torn down on February 2, 2025.