MOSCOW — The Trump administration on Friday announced new sanctions against a list of Russian business tycoons, government officials and corporations, part of the continuing political and economic fallout from the nerve agent attack on a former Russian spy and his daughter in England last month.

The roster includes some of the most powerful people and entities in Russia, with ties to President Vladimir V. Putin and his government. Many of them are suspected of corruption sanctioned by the Kremlin.

Britain has said that Moscow was likely behind the poisoning of Sergei V. Skripal and Yulia Skripal, and has persuaded its allies on both sides of the Atlantic. Russia denies any connection to the attack.

Here are some of the biggest names on the new sanctions list, and where their money came from.

Vladimir L. Bogdanov, secretive leader of an oil giant

Mr. Bogdanov, 66, is the director general and co-owner of Surgutneftegas, the fourth-biggest oil producer in Russia, which has an unusually opaque ownership structure, even by Russian standards. On paper, Mr. Bogdanov, an associate of Mr. Putin’s since the days when the president was a local official in St. Petersburg, owns just 0.37 percent of the company, with a majority of its shares controlled by a web of “noncommercial partnerships.”