Appu is a 2002 Indian Kannada-language romantic action comedy film directed by Puri Jagannadh. It stars Puneeth Rajkumar and Rakshita. The supporting cast features Avinash, Srinivasa Murthy and Sumithra. The film was produced by Puneeth's mother, Parvathamma under Poornima Enterprises, the production banner of the Rajkumar family. It marked the screen debut Puneeth and Rakshita in lead roles.Up on theatrical release on 26 April 2002, the film was a success and completed a 200-day run in theatres. The lead actor Puneeth Rajkumar came to be known as "Appu" hereafter among the masses, colloquially.

The film was remade in Telugu in 2002 as Idiot (Directed by Puri Jagannadh), in Tamil in 2003 as Dum, in Bengali in 2006 as Hero and in Bangladeshi Bengali in 2008 as Priya Amar Priya - making it the second Kannada movie to be remade in Bengali and Bangladeshi after the 1986 Kannada movie Anuraga Aralithu. It was the third Kannada movie to be remade in four languages after School Master and Anuraga Aralithu.