Saathiya (Devanagari: साथिया, Nastaliq: ساتھیا; English: Life Partner) is a 2002 Hindi romance film directed by Shaad Ali and produced under the banner of Yash Raj Films. The film stars Rani Mukerji, Vivek Oberoi, and Tanuja. The soundtrack was composed by A. R. Rahman. It is a remake of the Tamil film, Alaipayuthey directed by Mani Ratnam which also had its music by A. R. Rahman.

The film was released on 20 December 2002. It features cameo appearances by Shahrukh Khan and Tabu.

Aditya (Vivek Oberoi) and his friends are searching for Aditya's wife Suhani (Rani Mukherji). She has been missing for hours a few days after having a fight with Aditya, due to their failing marriage. But Aditya now realizes that he loves her more than anything and is devastated that he can't find her.

The film goes into a flashback, where it is seen that Aditya and Suhani meet each other at a wedding. Aditya immediately falls in love with her and pursues her. Suhani at first believes that he is simply flirting with her but later, both realize that they love each other. However Aditya's rich lifestyle and Suhani's middle-class lifestyle creates a rift between their parents. Aditya and Suhani elope and get married in a small ceremony. At first, they live in their respective homes and keep their marriage a secret. However when a proposal comes for Suhani's elder sister, the truth comes out. Aditya and Suhani then move to a dilapidated house and start their married life together.

Saathiya may refer to:

A film, also called a movie or motion picture, is a series of still or moving images. It is produced by recording photographic images with cameras, or by creating images using animation techniques or visual effects. The process of filmmaking has developed into an art form and industry.

Films are cultural artifacts created by specific cultures, which reflect those cultures, and, in turn, affect them. Film is considered to be an important art form, a source of popular entertainment and a powerful method for educating – or indoctrinating – citizens. The visual elements of cinema give motion pictures a universal power of communication. Some films have become popular worldwide attractions by using dubbing or subtitles that translate the dialogue into the language of the viewer.

Films are made up of a series of individual images called frames. When these images are shown rapidly in succession, a viewer has the illusion that motion is occurring. The viewer cannot see the flickering between frames due to an effect known as persistence of vision, whereby the eye retains a visual image for a fraction of a second after the source has been removed. Viewers perceive motion due to a psychological effect called beta movement.