Neighbors (released in some countries as Bad Neighbours) is a 2014 American bromantic comedy film directed by Nicholas Stoller and written by Andrew J. Cohen and Brendan O'Brien. The film stars Seth Rogen and Zac Efron, with Rose Byrne, Dave Franco, and Christopher Mintz-Plasse in supporting roles. The plot follows a couple who come into conflict with a fraternity that has recently moved in next door, which leads them into an all-out war.

The film premiered at South by Southwest on March 8, 2014, and was released on May 9 in the United States. The film received generally positive reviews, with praise aimed at Efron's breakout performance, and was a commercial success, grossing over $270 million worldwide, and became Rogen's highest-grossing live-action film. A sequel, Neighbors 2: Sorority Rising, was released on May 20, 2016, with Stoller returning to direct, and much of the cast reprising their roles.