Drive-In Massacre is a 1976 American B-movie slasher film written and directed by Stu Segall, and co-written by John F. Goff and George Buck Flower.

Investigating this dual homicide are police detectives Mike Leary and John Koch, who interview the drive-in's boorish manager, Austin Johnson, and the odd custodian, Germy.

Germy mentions that a peeping tom likes to cruise the area to watch couples and lone girls, and he is told to try and write down the voyeur's license plate number the next time he sees him.

Germy states that the sword is not a part of the owner's private collection, and tells the detectives that the voyeur was at the drive-in around the time of the latest double murder, and that he managed to write down the man's license plate number.

The film suddenly comes to an abrupt end where an on-screen text states that other drive-ins throughout the country are now being plagued by similar bloodbaths, and that the killer's identity is still unknown.