Appu is a 1990 Indian Malayalam-language drama thriller film directed by Dennis Joseph and written by Sreekumaran Thampi. It was produced by G. P. Vijayakumar of Seven Arts Films. The film stars Mohanlal as the title character. The film follows Appu who becomes a suspect in a murder case and his efforts to find the culprits. The film has songs composed by T. Sundararajan and background score by S. P. Venkatesh. The cinematography and editing were handled by Santosh Sivan and K. Sankunni respectively.