Mohan Rangachari (16 October 1952 – 10 June 2019), better known by his stage name Crazy Mohan, was an Indian actor, comedian, screenwriter and playwright. He wrote over 30 plays, and worked on over 40 movies as a dialogue writer and actor. He also wrote more than 100 short stories. He appeared many Tamil movies, including the comedies "Michael Madana Kama Rajan" (1990), "Thedinen Vanthathu" (1997) and "Vasool Raja MBBS" (2004).