Cyanide is an Indian 2006 Kannada-language drama film written and directed by A. M. R. Ramesh.

The plot of the film set in and around Bangalore from 1st to 20th August 1991, deals with incidents surrounding the assassins of former Indian Prime Minister Rajiv Gandhi.

[3] Reviewing the film, R. G. Vijayasarathy of IANS said it "shocks and surprises", and wrote, "[Its] dialogues are crisp, narration has good pace, camera angles and lighting match the mood and the background score fits perfectly."

"[4][3] The reviewer of Viggy.com felt the film's USPs were "its gripped narration, simplistic presentation" and "the style of picturising a dynamic story in an entertaining way".

[5] Sify.com commended the performance of the cast and added, "The camera work of Ratnavelu on the proceedings of 20 days of life of Shivarasan & gang is very effectively shown on screen, while Sandeep Chowta?s background score is awesome.