Nisekoi: False Love (Japanese: ニセコイ, Hepburn: Nisekoi; lit. 'Fake Love') is a Japanese manga series written and illustrated by Naoshi Komi. Nisekoi was first published as a one-shot manga in Shueisha's seasonal Jump Next! magazine before being serialized in the shōnen manga magazine Weekly Shōnen Jump from November 2011 to August 2016, with its chapters collected in 25 tankōbon volumes. Nisekoi was published in English in Viz Media's digital magazine, Weekly Shonen Jump and was also released by the publisher in English in digital and print volumes. A three-volume novel series, titled Nisekoi: Urabana, written by Hajime Tanaka, was released from June 2013 to April 2015.

A 20-episode anime television series produced by Shaft was broadcast from January to May 2014. A 12-episode second season, titled Nisekoi:, was broadcast from April to June 2015. Aniplex of America has licensed the series for streaming and home video distribution in North America. A live-action film adaptation premiered in December 2018.

Nisekoi follows high school students Raku Ichijo, the son of a leader in the Yakuza faction Shuei-gumi, and Chitoge Kirisaki, the daughter of a boss in a rival gang known as Beehive. They unexpectedly meet when Chitoge hops a wall and kicks Raku in the face. After she runs off, Raku realizes he has lost his locket which was given to him by his childhood sweetheart with whom he made a secret promise. After discovering Chitoge is a new transfer student in his class, he forces her to help him look for the locket. During the search, they begin to despise each other with a passion.

Upon returning home, Raku learns that the Shuei-gumi and Beehive gangs have agreed to settle their feud by pairing their leaders' children. Much to his horror, he learns that his girlfriend-to-be is only Chitoge. For the next three years, they must pretend to be in a relationship to maintain peace between the gangs. This turns out to be quite a challenging task, not only because of their hatred for one another, but also because Raku has a crush on another schoolmate, Kosaki Onodera, whom he secretly wishes was the girl who bears the key to his locket. Unbeknownst to him, Kosaki carries her own deep secret crush on Raku. The two do their best in their attempts to keep up their facade, while many developments complicate the situation, such as Chitoge's over-protective bodyguard, Claude, scheming to expose their relationship as fake.

During the school years new characters and developments arise to cause more trouble for Raku. Chitoge's childhood friend and Beehive hitman, Tsugumi Seishiro, joins the class, initially as an obstacle for Raku, before becoming a friend in the group, reluctantly accepting the relationship while unknowingly developing a crush on Raku herself. Marika Tachibana, daughter of the police captain, transfers in and declares herself as Raku's fiancée, having developed a crush on him for over ten years. Haru Onodera – Kosaki's younger sister – initially attempted to sabotage Raku's attempts to get closer with her sister, before eventually developing her own feelings for him. Yui Kanakura – the newly-appointed head of the Char Siu Mafia and Raku's childhood friend – later becomes the class' new teacher, herself also being in love with him.

Over the course of the story many revelations and discoveries are uncovered regarding the characters' relationships, the locket, and their promises. It is revealed Chitoge, Kosaki, Marika, and Yui all possess keys, and that they all knew each other ten years ago, making one of them Raku's "promise girl".

After numerous adventures with the girls and several confessions, Raku realizes that he has fallen for both Chitoge and Kosaki, then must choose. A final confrontation prompts the group to travel and uncover the truth behind the keys, as well as what happened ten years ago, which will lead to the final confessions.