[2] It is primarily known for its men's basketball team which has won the national championship 17 times.

[4] The club also fields departments in football, swimming, power lifting, judo and triathlon.

[6] As of the 2017–2018 season, Njarðvík's men's basketball team plays in the top-tier Úrvalsdeild karla.

[7] As of the 2017–2018 season, Njarðvík's women's basketball team plays in the top-tier Úrvalsdeild kvenna.

[7] Njarðvík men's football team currently plays in the second-tier Inkasso league[12] after winning the third-tier 2. deild karla in 2017.