Leonid Borisovich Nevzlin (Russian: Леонид Борисович Невзлин; Hebrew: לאוניד בוריסוביץ' נבזלין; born September 21, 1959 in Moscow) is a Russian-Israeli businessman. Nevzlin was a high ranking executive at Yukos, once a Russian oil firm before it was extinguished by the Russian government. That government is requesting his extradition due to hotly disputed criminal allegations against him and other former executives in Yukos. In 2008 he was tried in absentia and found guilty of several counts of conspiracy to murder and sentenced to life imprisonment. Nevzlin called the court case a show trial orchestrated by Vladimir Putin
Nevzlin graduated from the Gubkin Institute of Oil and Gas in 1981.
He worked for the Soviet Ministry of Geology. In 1981-1987 he was a software engineer in ZarubezhGeologia, an external trade organization of the then-Soviet Ministry of Geology. In 1987 he met Mikhail Khodorkovsky and became a Deputy Director in Center for Scientific and Engineering Creativity of Youths at Frunzensky Raion Committee of VLKSM (Центр научно-технического творчества молодежи "МЕНАТЕП" при Фрунзенском РК ВЛКСМ)
In 1989-1991 he worked as the President of Menatep Bank.