Ukraine participated in the Junior Eurovision Song Contest 2018 in Minsk, Belarus with the song "Say Love" performed by Darina Krasnovetska. Their entrant was selected through a national selection, organized by the Ukrainian broadcaster UA:PBC.

The Junior Eurovision Song Contest 2018 was the sixteenth edition of the annual Junior Eurovision Song Contest, organised by the Belarusian Television and Radio Company (BTRC) and the European Broadcasting Union (EBU). It took place in the Belarusian capital city, Minsk on 25 November 2018 at the Minsk-Arena. It was the second time that the contest was held in Belarus, after it staged the 2010 edition at the same venue.