Main Hoon (Part-Time) Killer (transl. I am a part-time killer, initially titled Main Hoon Rajinikanth) is a 2015 Indian Hindi-language spoof film written and directed by Faisal Saif and produced by Mrs. Saroj under the banner of Varsha Production House. The film marks the Bollywood début of South Indian actor Adithya Menon.

The film was initially to be released in 2014, but faced opposition and controversy when South Indian actor Rajinikanth approached the Madras High Court to stop the film's release based upon the use of his screen name in the film's title. Business of Cinema categorised the film as one of the Top 10 banned films of Bollywood along with movies such as Bandit Queen, Black Friday, Kama Sutra: A Tale of Love and Kissa Kursi Ka.

After a lengthy court battle, filmmaker Saif finally changed the title due to the producer's pressure. It was released on 22 May 2015 across North India by Dimension Pictures. However, in South India it was not released to avoid further legal disputes.