Ida Maria Børli Sivertsen, (born 13 July 1984) is a Norwegian rock musician known primarily by the stage name Ida Maria. She was born and raised in the small town of Nesna in Nordland county, Norway, but she currently lives in Stockholm, Sweden. She gained considerable success in Norway in 2007 after winning two national competitions for unknown artists - Zoom urørt 2006 and Urørtkonkurransen 2007 - and playing very successful shows at the annual Norwegian music industry festival By:Larm 2007 and 2008. Her singles "Oh My God" and "Stella" were both played regularly on Norwegian national radio station NRK P3. She has later expanded her popularity outside of her native country, namely in the United Kingdom, where she has appeared on Later... with Jools Holland, interviewed by The Times and performed at Glastonbury Festival. Sivertsen is reported to have the neurological phenomenon of synesthesia which, in her case, means she envisions colours when she hears music.

Having performed at various festivals, including Reading, and being nominated for Best Rock/Indie Artist category at the BT Digital Music Awards 2008, Ida Maria has toured in Scandinavia, the United Kingdom, the United States, and Australia. Ida Maria will be playing at the 1st annual KahBang Indie Music and Art Festival in Bangor, Maine on August 15th 2009.