Casper Meets Wendy is a 1998 American fantasy comedy film based on the Harvey Comics cartoon characters Casper the Friendly Ghost and Wendy the Good Little Witch. The film is a sequel to Casper: A Spirited Beginning, and the second spin-off/prequel of Casper (1995). Saban Entertainment co-produced the project. The film marks the second Casper film to co-star Cathy Moriarty, who previously starred as the main antagonist in the 1995 film.

This was the first major film for Hilary Duff, who was 10 years old when the film was released on September 22, 1998, six days before her 11th birthday. The film was met with mostly negative reviews from critics, but was considered an improvement to its predecessor. Its television premiere was October 24, 1999 on Fox Family.