Portugal has been represented at the Junior Eurovision Song Contest since , and includes a total of nine appearances. The Portuguese participating broadcaster in the contest is (RTP). It was not represented at the contest between 2008 and 2016, their longest absence run, and in 2020. Its first entry was "Deixa-me sentir" by Pedro Madeira, which finished in second-last place out of fifteen entries. Its worst result to date came in 2018 when "Gosto de tudo (já não gosto de nada)" by Rita Laranjeira placed 18th out of 20 entries. Its current best result is a second place obtained with "Esperança" by Victoria Nicole at the edition.
Portugal has sent eight entries to the contest, first entering in . Portugal finished second-last in both 2006 and , and Portuguese broadcaster Rádio e Televisão de Portugal (RTP) withdrew after the 2007 contest, despite high viewing figures. On 28 July 2014, it was announced that Portugal would return in , but on 4 September 2014 it was announced that they ultimately would not participate. Portugal returned in and has participated until 2019. Portugal provisionally confirmed their participation in the contest, but did not appear on the final list of participants, because COVID-19. Portugal returned in 2021 with Simão Oliveira, who came 11th, giving Portugal their best result up to that point. This achievement was then surpassed in 2022, when Portugal came 8th with Nicolas Alves and the song âÂÂAnos 70âÂÂ, which was also the first entry sung entirely in Brazilian Portuguese dialect. The following year, Portuguese-American singer Júlia Machado came 13th out of 16 with 75 points, achieving Portugal's fourth-best result in Junior Eurovision.
In 2024, Portugal achieved their best result to date, with Victoria Nicole and the song Esperança placing 2nd, with 213 points.
The contests are broadcast online worldwide through the official Junior Eurovision Song Contest website junioreurovision.tv and YouTube. In 2015, the online broadcasts featured commentary in English by junioreurovision.tv editor Luke Fisher and 2011 Bulgarian Junior Eurovision Song Contest entrant Ivan Ivanov. The Portuguese broadcaster, RTP, sent their own commentators to the contest in order to provide commentary in the Portuguese language. Spokespersons were also chosen by the national broadcaster in order to announce the awarding points from Portugal. The table below list the details of each commentator and spokesperson since 2005.