Hallo is a 2007 Indian Malayalam-language black comedy thriller film written and directed by the Rafi Mecartin duo. It stars Mohanlal and Parvathy Melton (in her Malayalam debut), with Siddique,Jagathy Sreekumar,K. B. Ganesh Kumar, Madhu, and Saiju Kurup in important roles. The music was composed by Alex Paul. The film received positive reviews from critics, with critics particularly praising Mohanlal"s performance. It was also a major commercial success.

It was remade in Telugu as Naa Style Veru (2009) and in Kannada as Manjunatha BA LLB (2012). The plot of the movie was reported to have been partially borrowed from the 2004 movie Cellular.