M. Jaishankar (1977 – February 27, 2018), nicknamed Psycho Shankar, was an Indian criminal, sexual predator, and serial killer, notorious for a series of rapes and murders during 2008–2011. It is believed that he was involved in about 30 rapes, murders, and robbery cases across Tamil Nadu, Karnataka and Andhra Pradesh. At the time of his death, he had been accused of murdering at least 19 women.