The Njarðvík men's basketball team, commonly known as Njarðvík or UMFN, is the men's basketball department of Ungmennafélag Njarðvíkur, based in the town of Reykjanesbær in Iceland.

[2] It is one of the most successful men's team in Icelandic basketball, winning 17 national championships.

In late 1973 the basketball department was in need of new uniforms and due to lack of funds they decided to select a colour that no other team was using, so they wouldn't have to buy two sets of uniforms.

[10] After moving to Njarðvík, the team played its home games at Íþróttahús Njarðvíkur, [11] commonly nicknamed Ljónagryfjan (English: The Lion's Den)[12][13][14][15] In July 2019, Njarðvík signed a 2-year sponsorship deal with Njarðtak, naming the arena the Njarðtaks-gryfjan (English: The Njarðtak's Den).

To appear in this section a player must have either: Njarðvík's reserve team, called Njarðvík-b, regularly plays in the Icelandic 3rd-tier 2. deild karla.