Mariya Olehivna Muzychuk is a Ukrainian chess grandmaster and women's world chess champion from April 2015 to March 2016. She is also a twice women's champion of Ukraine, World Team and European Team

Anna Olehivna Muzychuk is a Ukrainian chess grandmaster. She is the fourth woman in chess history to attain a FIDE rating of at least 2600. She has been ranked as high as No. 197 in the world, and No.