Olga Yurievna Seryabkina (Russian: ????? ??????? ?????????; born 12 April 1985) is a Russian singer-songwriter.
She used to be a member of girl group Serebro, which won third place in the Eurovision Song Contest 2007, until 2019, after confirming that she would leave the group that year, being the last of the original line-up to do so.