Silje Wergeland (born 9 November 1974) is a Norwegian singer, songwriter and pianist.

She is best known as the current lead vocalist of the Dutch progressive/alternative rock band The Gathering (since 2009).

Silje Wergeland was a founding member of the female group of gothic / doom metal Octavia Sperati in 2000, where she remained as vocalist and one of the main songwriters along with Gyri Losnegaard and Bodil Myklebust, until 2008.

[2] In an interview with Paul Stenning, Wergeland described the band as “Extravagant, dramatic doom with a rock n’ roll heart.” She also said her influences were “Black Sabbath, Slayer, Clutch, Pantera, Type O Negative, Pink Floyd among others, and also some Norwegian folk music influences due to our musical inheritance.”[3] On 10 March 2009, it was announced that singer Wergeland joined the Dutch rock band The Gathering, replacing singer Anneke van Giersbergen, who left to form her band Agua de Annique.

Her partner is Mads Lilletvedt, drummer of the death / thrash metal local band Hellish Outcast and Sahg.