Ekaterina Dmitrievna "Katya" Ryabova (Russian: Екатерина Дмитриевна "Катя" Рябова, born 4 August 1997) is a Russian singer. She is from Shchyolkovo, but now resides in Yubileyny.
She was selected to represent her country in the Junior Eurovision Song Contest 2009 with the song Malenkiy Prints (The Little Prince). At the contest on 21 November in Kiev, she tied for second place with Luara Hayrapetyan from Armenia. In 2011 she became the first returning artist in Junior Eurovision history, representing her country with the song Kak Romeo i Dzhulyetta (Like Romeo and Juliet) and placing fourth.