Alexander Anatolyevich Donchenko (Russian: Александр Анатольевич Донченко; born 22 March 1998) is a German chess grandmaster.

[6] Donchenko shared second with Gata Kamsky at the Biel Masters in July 2019 with 6½/9 (+5–1=3), half a point behind winner Amin Tabatabaei.

[8] Donchenko was a late replacement for Daniil Dubov in the 2021 Tata Steel Masters, as the latter withdrew due to a close associate testing positive for COVID-19.

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