E vgeny "Eugene" Shvidler is a billionaire businessman who is the longtime friend and primary business partner of the famous Russian oligarch, Roman Abramovich. An oil engineer and mathematician by training, Shvidler teamed up with Abramovich in the early 1990s. He became a key executive in Abramovich's oil trading company, Runicom, and later played a central role in the creation of the massive oil giant, Sibneft.

When Abramovich and his partners sold Sibneft to the state-owned Gazprom in 2005 for over $13 billion, Shvidler received a significant share of the proceeds. He has since been the chairman of Millhouse LLC, Abramovich's primary investment and asset management company, helping to manage his vast fortune. He also has his own significant investments, including a large portfolio of vineyards. A U.S. citizen, Shvidler was sanctioned by the United Kingdom in 2022 due to his close business ties to Abramovich following the Russian invasion of Ukraine.