WonderCon is an annual comic book, science fiction, and film convention held in the San Francisco Bay Area (1987–2011), then—under the name WonderCon Anaheim—in Anaheim, California, and WonderCon Los Angeles in 2016. The convention returned to the Anaheim Convention Center in 2017 after a one-year stint in Los Angeles due to construction at the Anaheim Convention Center.

The Anaheim Convention Center is a major convention center in Anaheim, California and is the largest exhibition facility on the West Coast of the United States. It is located across from the Disneyland Resort on Katella Avenue. The original components, designed by Adrian Wilson & Associates and built by Del E. Webb Corporation, opened in July 1967—including a basketball arena followed shortly by the convention hall. It holds many events, like Star Wars Celebration, VidCon, BlizzCon, Anime Expo, D23 Expo, WonderCon, NAMM Show, competitions, and more. In addition to hosting various types of conventions, the Anaheim Convention Center was used to host the wrestling during the 1984 Summer Olympics.