Hostel: Part II is a 2007 American horror film written and directed by Eli Roth, serving as a sequel to Hostel (2005). The film stars Lauren German, Roger Bart, Heather Matarazzo, Bijou Phillips, and Richard Burgi. It was produced by Mike Fleiss, Roth, and Chris Briggs, with Boaz Yakin, Scott Spiegel, and Quentin Tarantino serving as executive producers. The plot follows three American female art students in Rome who are directed to a Slovak village where they are eventually kidnapped and taken to a facility in which rich clients pay to torture and kill other people.

After the significant box office receipts of Hostel, Roth conceived a sequel set directly after the events of the first film, opting to include three female protagonists to "up the ante." Filming took place in September 2006 in Prague at Barrandov Studios, with additional photography occurring in Iceland and Slovakia.

Banned from theatrical release in several countries, Hostel: Part II had its world premiere at the Museum of the Moving Image in New York City on June 6, 2007, and was released theatrically in the United States two days later, on June 8. The film earned less than its predecessor at the box office, grossing $17 million in the United States by the end of its theatrical run, whereas the original made $19 million in its opening weekend alone. Prior to its theatrical release, a workprint of the film leaked on the Internet, and one publication at the time claimed it was the "most pirated film ever", which Roth suggested was a factor in the film's box office returns.

Following his escape from the Elite Hunting Club, Paxton has PTSD and lives in seclusion with his girlfriend, Stephanie. After an argument where Stephanie denounces Paxton's paranoia as exaggerated and "insufferable", she wakes to find his headless corpse in their kitchen. Soon after, an unmarked box containing Paxton's severed head is delivered to the Elite Hunting Club's boss, Sasha Rassimov.

In Rome, three American art students, Beth, Whitney, and Lorna, are convinced by Axelle, a nude model they are sketching, to join her on a luxurious spa vacation in Slovakia. During a train ride, Beth is accosted by a passenger while Lorna gets her iPod stolen, which Axelle recovers. The four check into a hostel, where the desk clerk surreptitiously uploads their passport photos to an auction website run by the Elite Hunting Club. American businessman Todd and his best friend Stuart win the bids on Whitney and Beth, and excitedly travel to Slovakia.

Later that night, at the village's harvest festival, Lorna is invited by Roman, a Slovak local, to join him on a boat ride. After being taken to a secluded area downstream, Lorna is kidnapped, and awakens to find herself having been stripped naked, bound, gagged, and hanging upside down. Another woman, Mrs. Bathory, enters the room, disrobes, and lies naked beneath Lorna, before using a long scythe to repeatedly slash Lorna's back, torso, and eventually her throat, all while bathing in her dripping blood. Meanwhile, Beth, Whitney, Axelle, and a local man, Miroslav, head to a spa to relax. Beth falls asleep, and wakes up alone and without her belongings. While looking for her friends, she is pursued by several men and flees the spa. In the woods, she is ambushed by a gang of violent street Romani children, but is saved by Sasha and Axelle; after both ladies leave, Sasha kills one of the boys as punishment.

Later, at Sasha's remote mansion, Beth is pursued by the men from earlier, whom she realizes are associated with Sasha and Axelle. Looking for a hiding place, she discovers a room filled with human trophy heads (one of which is Paxton's) before being captured, taken to the Art Show, where security has been upgraded prior to the previous film, and tied up in a room. Beth is soon joined by Stuart, who is supposed to kill her, yet appears reluctant to do so. However, he knocks her unconscious after untying her.

Whitney attempts to escape after biting off the makeup artist's nose but is recaptured. In another room, Todd terrorizes Whitney with a power saw, but loses his nerve after accidentally wounding her. Horrified, Todd tries to leave, but is told that he must kill Whitney before leaving as stated in the contract. Todd refuses and tries to leave anyway, and the guards release attack dogs, which tear him apart. The Elite Hunting Club then offer the maimed Whitney to the other clients to kill, including an elderly Italian man who is eating Miroslav alive. Stuart, after learning of Todd's death but unaware of the circumstances, shows Beth the pictures of the maimed Whitney to frighten her, then accepts the club's offer, leaves Beth, and beheads Whitney.