Konstantin Kasimir Sidney Klein (born 21 May 1991; formerly known as Konstantin Konga) is a German former professional basketball player who lastly played for Eisbären Bremerhaven of the German ProA.

After his divorce in January 2023, he changed his surname back from Konga to Klein.

[1] On 10 August 2016, Konga signed a three-year deal with Telekom Baskets Bonn.

[4] In 2015, Klein was selected for the German national basketball team.

This biographical article relating to a German basketball figure is a stub.