Sebastian Calleja (born 3 July 1998) is a Maltese singer. He started his singing career at the age of 11. He studied voice and in March 2016 he placed 1st in the Trinity College of London vocal exam. His vocal coach is Glen Vella. Calleja is a resident singer on 'Hadd Ghalik' which is aired on the national Maltese television channel TVM. He also played main roles in various musicals on the local stage, including 'Aida', 'Rumpilstilskin', 'Barnuza Blu', 'Katrin tal-Imdina', 'The Pantomime Sossy u Tezor Mitluf', 'Carmen', 'Dracula' and 'Star Child'. In 2016, he also was chosen (together with other 5 local singers) to be part of the song and music video for the Maltese version of the World Youth Day Song 2016 - 'Henjin li jhennu'.