Katja Johanna Alice Nyberg is a naturalized Norwegian former handball player. She played 99 games and scored 321 goals for the Norwegian national team during her career. With the Norwegian team she won a gold medal at the 2008 Summer Olympics in Beijing and a silver medal at the 2007 World Women's Handball Championship in France, as well as two gold medals and one silver medal at the European Championships.

The Norway women's national handball team represents Norway at international handball competitions, and is governed by the Norges Håndballforbund (NHF). As of 2023, Norway has been in 25 finals and is regarded as one of the finest women's national handball teams ever, with 32 medals.