Polarkreis 18 was a German rock band from Dresden, Saxony.

The bandmembers met at school, where they formed the Jack of all Trades ensemble in 1998.

Their single "Allein, Allein" (Alone Alone) reached the number one position on the German Media Control Top100 Singles chart from 31 October 2008 to 4 December 2008 for 5 consecutive weeks and another 8 weeks on position number 2.

It also made the number 1 position for 5 consecutive weeks in Denmark with a remake version of the Danish band Nephew.

The band consisted of: Felix Räuber, Silvester Wenzel, Uwe Pasora, Philip Makolies, Christian Grochau and Ludwig Bauer.