Hit N Fun (Chinese: 臨時決鬥) is a 2025 Hong Kong comedy film directed and co-written by Albert Mak. Serving as a spiritual successor to Mak's Rob N Roll (2024), the film is co-produced by One Cool Film Production and Entertaining Power. It features an ensemble cast, including Louis Koo, Gigi Leung, Louise Wong, Chrissie Chau, Tony Wu, German Cheung, and Peter Chan. The story revolves around a businesswoman (Wong) who challenges a Muay Thai champion (Chau) to a boxing match, navigating life through her training with her coach (Koo).

Following the critical success of the Chinese New Year film Rob N Roll, Albert Mak began developing his next feature with Louis Koo and screenwriter Link Ling. In July 2024, he pivoted the project into a New Year film due to a lack of productions in that genre. Principal photography took place in Hong Kong and Macau from October to November, and post-production wrapped up in December, with the entire development process spanning three to four months. The film's theme song "Pick Me Up" was performed by Tony Wu and featured various cast members in the rap sections.

The film had its world premiere at Studio City Macau on 18 January 2025, followed by a theatrical release in Hong Kong on 28 January, as a Chinese New Year film of the Year of Snake. It became the highest-grossing New Year film released in Hong Kong during Lunar New Year, though its overall box office performance was considered disappointing.