Exhibit 16.1

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Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

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Ladies and Gentlemen:

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We have read the statements made by Nebius Group N.V., which we understand will be filed with the Securities and Exchange Commission, pursuant to Item 16F of Form 20-F of Nebius Group N.V. dated April 30, 2025. We agree with the statements concerning our Firm contained therein.

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Very truly yours

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__________________________

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/s/ Joint-Stock Company “Technologies of Trust – Audit”

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Moscow, Russia

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April 30, 2025