Sergei Sychyov (born February 6, 1977, in Odesa) is a Ukrainian ice dancer who also competed internationally for Estonia.

He competed internationally for Ukraine on the junior level with Julia Shevchenko.

With Mosenkova, he is the 2000-2002 Estonian national champion and competed at the World Figure Skating Championships and European Figure Skating Championships, with a highest placement of 21st at the 2000 European Figure Skating Championships.

They also competed on the ISU Grand Prix of Figure Skating.

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