The Lambertville Halloween Film Festival is an annual event presented by ACME Screening Room, a non-profit cinema in Lambertville, New Jersey. The festival typically takes place in October and features a juried short film competition with categories such as "Heady Horror," "Guts and Gore," and "Happy Halloween," alongside cult classic screenings, horror guest speakers, and themed parties. It contributes to Lambertville's reputation for serious artistic community and Halloween festivities.