Sebastian Rejman (born 13 January 1978) is a Finnish singer, actor, and television host.
He is the singer and guitarist of the band The Giant Leap.
While Giant Leap has been on hiatus, Rejman founded a new band called Sebastian & The 4th Line Band.
He represented Finland in the Eurovision Song Contest 2019 along with Darude.
After performing 3rd in the 1st semi-final they didn't receive enough votes to place in the top 10 and failed to qualify for the Grand final.