Bertine Axeliane Robberstad Zetlitz aka Bertine Zetlitz (born April 9, 1975) is a Norwegian pop singer. She is one of Norway's most popular performers.

Zetlitz began her musical journey at a young age, penning her first numbers aged just 12. After gaining a background in classical music, Zetlitz began to experiment. Her debut album Morbid Latenight Show was released in 1998 and spawned several successful singles. It was followed by the Tore Johansson produced Beautiful So Far in 2000. Her third album, Sweet Injections, was released in 2003, helmed by electronic experts Howie B, Magnus Fiennes and Richard X (Sugababes, Rachel Stevens). Lead single "Girl Like You" signalled a change of direction for the singer.

Zetlitz's fourth album Rollerskating was released in late 2006. EMI describes the release as a "fascinating and unique blend of pulsing electro, classic Disco nouveaux, twisted pop melodies and good old fashioned catchy choruses. It's Bertine as you know and love her, but with a new even more addictive sting in her tail." Lead single "Fake Your Beauty" was a radio hit and reached the top spot in the Norwegian charts. Its follow-up "Ah-Ah" was remixed on release and was a sizeable hit.

Zetlitz released her fifth album My Italian Greyhound in September 2006. She described the album as "like its namesake: elegant, humorous, fit and well scented - with a charming hint of neurosis."

Zetlitz gave birth to her first child, a daughter called Lill, in January 2007. Afterwards she temporarily retired from show-business to become a full-time mother. Later that year she released the greatest hits album In My Mind 1997–2007 the Best of Bertine Zetlitz, which featured two new songs.