Slavin Slavchev (, born 7 March 1991) is a Bulgarian singer and songwriter currently a lead vocal and bass guitarist in Julian's Laughter. He is the winner of the 2014 season of Bulgarian X Factor.
Slavchev was part of the third season of X Factor and won it. In the first week of the show he performed Cryin' by Aerosmith. Zaki said that after this performance he believed that Slavchev could give a new life to the rock music in Europe. He moved on to week 2 by being among the highest number of vote winners. Second week was a Halloween night where he performed Love Runs Out by OneRepublic. In the next week's show he performed "Give in to Me" and the Bulgarian song "ÃÂûÃÂà÷ð ôòðüð". After his performance of Queen's hit "Who Wants to Live Forever" the judges called it the best performance of the season and that they see him as a potential winner. At the final show he presented a duet with Joe Lynn Turner performing the Rainbow's song "Street of Dreams" He won the show after this being on the final with Mihaela Marinova (third) and Nevena Peykova (runner-up).
Exclusive in the final of X Factor he performed him first solo single "Ela" (Come). Lately it was released and a video of the song which had scenes from all performs of Slavin on X Factor's stage. In the summer of 2015 he released and him 2nd single "Losh Sum za Teb" (I'm bad for you) by Wow Productions. The Bulgarian model Queenie-Alice Nicolova took part in the video.
In 2017 Slavin, together with Miloslav Petrov, Tihomir Vasilev and Nikolay Nikolaev established the alternative/art rock band Julian's Laughter.
Slavchev studied law in Veliko Tarnovo University. He is a member and front-man of the hard-rock/progressive/alternative band Century (formed in Varna, Bulgaria in 2012). During the show he announced that he broke up with his girlfriend.