Everton have suspended their commercial sponsorship arrangements with billionaire Alisher Usmanov following Russia's military invasion of Ukraine.
The Premier League club said the move, which has been made with immediate effect, concerns Russian companies USM, Megafon and Yota.
It comes after the assets of Mr Usmanov were frozen by the European Union.
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The Uzbekistan-born businessman's USM Holdings providing a number of Blues sponsorship agreements.
After Russia's military invasion of Ukraine, sanctions continue to be placed on the country, with those closely tied to President Putin being the latest to be targeted by measures.
In a statement published on the club's website, they said: "Everyone at Everton remains shocked and saddened by the appalling events unfolding in Ukraine.
"This tragic situation must end as soon as possible, and any further loss of life must be avoided.
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"The players, coaching staff and everyone working at Everton is providing full support to our player Vitalii Mykolenko and his family and will continue to do so.
"The club can confirm that it has suspended with immediate effect all commercial sponsorship arrangements with the Russian companies USM, Megafon and Yota."
USM first entered into a naming rights agreement with the club in 2017 on an initial five-year deal, with Everton's training ground being renamed USM Finch Farm.
That deal was expanded in 2019 to see it become the club's official matchday presenting partner.
That would see an increased presence across club channels for companies from within the USM Holdings portfolio, including MegaFon and Mail.Ru Group.
The package also included shirt sleeve sponsorship of first team training wear and significantly increased matchday presence for companies within the group.
In early 2020, while speaking to the Financial Times, Usmanov heavily hinted at potentially investing in Everton officially in the future.
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Days later, it was announced that USM had secured a naming rights option on Everton's proposed Bramley-Moore Dock stadium, with the company signing a £30m deal which essentially granted them first refusal on having the new ground named after them.
Later that year, the Blues revealed a change to Goodison Park with Megafon's name and logo being placed on two new towers outside the Park End.
USM and Megafon branding still appears pitchside at Goodison Park and as part of the advertising boards for post-match interviews.