Armenia was represented at the Junior Eurovision Song Contest 2024 with the song "Cosmic Friend", written by Arpine Martoyan, Tokionine and Vahram Petrosyan, and performed by Leo. The Armenian participating broadcaster, Public Television of Armenia (AMPTV), internally selected its entry for the contest.
Prior to the 2024 contest, Armenia had participated in the contest sixteen times since its first entry in the . Since then, it had placed inside of the top three on ten occasionsmore than any other country to have ever competedand won the contest on two occasions: in with the song "" performed by Vladimir Arzumanyan and in with "" performed by Maléna. The nation opted not to take part in the contest in due to the martial law imposed on the country as a result of the then-ongoing Second Nagorno-Karabakh War; it was then set to be represented by Maléna. In , Yan Girls competed for Armenia with the song "Do It My Way", which ended up in 3rd place out of 16 entries with 180 points.
Upon confirming its participation in the 2024 contest, AMPTV declared it would internally select its entrant and entry, and opened a submission process for interested artists aged between nine and fourteen, lasting until 21 July 2024; the deadline was later extended to 28 July 2024. All submissions required participants to enter covers of two songs, with the Junior Eurovision entry to be written for the selected entrant at a later date. Upon closing the submission period, over 100 applications had been submitted.
Following two rounds of auditions, an expert focus group consisting of both local and international industry professionals and appointed by AMPTV (presented in the table below) determined the eventual representative for the country. On 28 September 2024, AMPTV announced that it had internally selected ten-year-old Leo Mkrtchyan, known mononymously as Leo, as the Armenian entrant for the 2024 contest. His competing song, "Cosmic Friend", was released on 22 October 2024.
The Junior Eurovision Song Contest 2024 is set to take place at in Madrid, Spain on 16 November 2024. Armenia will perform 4th, following and preceding .
At the end of the show, Armenia received 76 points from juries and 49 points from online voting, placing 8th.