The move will prevent Yulia Samoilova from participating in the singing contest.
Ukraine has banned Russia's entry for the 2017 Eurovision song contest, Yulia Samoilova, from entering the country for three years, because the contestant had previously visited Crimea
Olena Gitlyanska, a member of Ukraine's security service, announced the decision on Wednesday via a Facebook post. She included photos of 27-year-old Samoilova at a concert in Crimea.
"The Security Service of Ukraine banned from entering Ukraine citizen of the Russian Federation Julia Samoilova for three years. The decision taken on the basis of the information on her violation of laws of Ukraine."
Entering Crimea through Russia without passing through the border on the East of Ukraine, or gaining Ukrainian authority's permission, is illegal under Ukrainian law.
The Russian ministry of foreign affairs told state-owned news agency RIA Novosti that the decision was, "cynical and inhuman."
Maria Antipina/TASS/Alamy Live News