Russian businessman Leonid Arnoldovich Fedun has an estimated net worth of $5.1 billion as of April 2016, according to Forbes. In 2012, his net worth was estimated to be around $6.1 billion according to Forbes, which made him the 133rd wealthiest man in the world. A year later, his net worth increased by a billion dollars.

Leonid Fedun is currently married with two children. He is a graduate of Military Academy F. E. Dzerzhinsky.

Most of Fedun's net worth is derived from the Russian oil company Lukoil where he owns 9.2% of the total stakes. He is instrumental in the privatization of the company in the 1990's. He currently serves as the right hand of Vagit Alekperov, the present Chief Executive Officer of Lukoil. He is also the owner of Spartak Moscow, a Russian football club.  He is also responsible for overseeing the investment activities of IFD Capital.