The Mount Gretna International Film Festival (MtGIFF) is an annual event held in Mount Gretna, Pennsylvania, coinciding with the nationally ranked Mount Gretna Outdoor Art Show. The festival takes place at the historic Mount Gretna Playhouse, an open-air theatre, and aims to support and celebrate emerging and established filmmakers globally. MtGIFF was created to honor the memory of Michael Evan Deitzler, who had a vision to support and celebrate filmmakers. The festival features screenings of selected films, an awards ceremony, and networking events, typically including categories such as drama, horror, comedy, documentary, and a high school division.