Efim Pavlovich Slavsky (Russian: Ефим Павлович Славский, Ukrainian: Юхим Павлович Славський; romanized: Yefim Pavlovich Slavskiy, Yukhym Pavlovych Slavskyi; 7 November 1898 – 28 November 1991) was a Soviet-Ukrainian politician and engineer best known for his role in liquidating the Kyshtym and Chernobyl nuclear accidents in the Soviet Union.

Slavsky was later tasked with leading the Ministry of Medium Machine-Building where he oversaw the Soviet nuclear program from 1956 until his forced retirement in 1986.

After graduation, Slavsky moved to Ordzhonikidze to work at the Electrozink manufacturing plant producing zinc, lead, and copper.

In 1943, Slavsky worked at the newly founded Kurchatov Institute of Atomic Energy where he helped procure the large quantities of highly pure graphite needed for the construction of the Soviet Union's first nuclear reactor.

[1] In 1945, Slavsky and other Soviet engineers began construction on the top secret Maiak Complex near the settlement of Kyshtym.

Despite the protests of his medical staff, Slavsky entered the reactor hall on multiple occasions to assist his workers[7] and received considerably more than the already extremely high 30 REM/annum exposure limit.

On May 20, 1986, Slavsky was put in charge of Construction Committee 605 responsible for liquidating the consequences of the April 26th accident at Chernobyl.

[1] Slavsky is known for turning the ministry into a very private organization accepting very little oversight from the All-Union government, actions that would later lead to the breakup of his nuclear empire.