Aidan Cassar (; born 17 December 1999), known mononymously as Aidan, is a Maltese singer and songwriter. He will represent in the Eurovision Song Contest 2026 with the song "Bella".
In 2015, he competed in the Malta Junior Eurovision Song Contest. In 2018, he competed in the Malta Eurovision Song Contest with the song "Dai Laga". Following reports that the song, originally described as an original composition, had used a publicly available production beat and could have potentially violated Eurovision rules, it was revamped and re-released so it wouldn't be disqualified. The song placed fourth in the contest. Afterwards, he participated in the X Factor Malta.
His single "Naçseb Fik" has been compared to "Tick Tock" by Clean Bandit and Mabel and was said to have a similar cord progression. He denied the beat and melody were plagiarised. The song was entered into the Muà ¼ika Muà ¼ika song festival in 2021, it was the first time he has written a song in Maltese and performed in Maltese. The music video won music video of the year at Lovin Malta Social Media Awards in 2021.
He entered the Malta Eurovision Song Contest in 2022 with the song "Ritmu", placing second. The song went on to top the Maltese Radio airplay charts for three weeks, and Aidan was later invited to perform it at the London Eurovision Party. He was also the Maltese jury spokesperson at the Eurovision Song Contest 2022.
On 24 July 2022, he performed the songs "Naçseb Fik" and "Ritmu" during the Isle of MTV 2022 festival in Floriana.
In 2023, he entered the Malta Eurovision Song Contest again with the song "Reáina". He was disqualified from the contest allegedly due to social media posts about his song which were not allowed by Public Broadcasting Services (PBS). He threatened PBS with legal action but went on to perform a medley of his songs in the interval.
He later entered the Malta Eurovision Song Contest 2026 with the song "Bella" and won, which enabled him to represent Malta in the Eurovision Song Contest 2026.