Yuliana Leonidivna Fedak (; born 8 June 1983) is a Ukrainian former tennis player.
Fedak has a career-high singles ranking of world No. 63, attained on 18 September 2006, and a career-high WTA doubles ranking of 34, achieved on 15 January 2007. She won six singles titles and eleven doubles titles on the ITF Women's Circuit.
Fedak retired from tennis in 2011.
Fedak partnered Ukrainian Alona Bondarenko in women's doubles at Roland Garros. They lost in the third round to KvÃÂta Peschke and Francesca Schiavone.
She partnered with fellow Ukrainian Tatiana Perebiynis for the qualifying event of women's doubles at Wimbledon. The pair qualified for the main draw and reached the semifinals but lost to Paola Suárez and Virginia Ruano Pascual.