The Drug King (Korean: 마약왕; Hanja: 麻藥王; RR: Mayakwang) is a 2018 South Korean crime drama film written and directed by Woo Min-ho.

[4][5][6] It stars Song Kang-ho as Lee Doo-sam, an ordinary small-time narcotics dealer who becomes an infamous drug lord in Korea during the 1970s.

The film also features Jo Jung-suk as a prosecutor from Seoul who is intent on taking Lee down and Bae Doona as a lobbyist who guides Lee into the upper levels of drug dealing.

Lee was originally a member of the Chilsung faction in Busan from Hwanghae Province.

In the early 1970s, he smuggled diamonds and other products, and eventually expanded it to drugs for domestic distribution, and exported it to Japan as well, thus accumulating huge amounts of wealth in the process.