Sanna Viktoria Nielsen (born 27 November 1984) is a Swedish singer, television presenter and musical theatre performer.

[3][full citation needed] At the same time she reached the number one spot on the Svensktoppen chart with the song "Till en fågel".

[8] During her high school years, she studied the Estetichal programme[clarification needed] and music at Helenehoms Gymnastin in Malmö.

[9] In December 2001, Nielsen participated in a Christmas tour along with Christer Sjögren, Sten Nilsson and Charlotte Perrelli.

[10] In 2002 she toured with Roger Pontare and in December the same year she participated in a Christmas concert with Kalle Moraeus and Tito Beltran in both 2003 and 2004.

[16] Nielsen has participated seven times in Melodifestivalen, Sweden's annual music competition and national selection for the Eurovision Song Contest.

After a one-year break, Nielsen returned again in Melodifestivalen 2005 with "Du och jag mot världen", this time as a duet with Fredrik Kempe, which finished eighth.

Nielsen participated in Melodifestivalen 2008, performing "Empty Room", written and composed by Bobby Ljunggren and Aleena Gibson.

[24] On 10 April 2015, it was announced that Nielsen and Edward af Sillén would commentate the SVT broadcast of the Eurovision Song Contest 2015.

[28] Sanna returned to Eurovision travelling to Lisbon in May 2018 as a commentator for the national Swedish broadcaster, Sveriges Television (SVT).