Dominik Walter Roland Klein (born 16 December 1983) is a former German handball player who last played for HBC Nantes.

He participated on the German team that finished 4th at the 2008 European Men's Handball Championship.

[3][4] Klein played for the German club THW Kiel which won both the EHF Champions League and the EHF Men's Champions Trophy in 2007, in addition to winning German championships.

[5] In 2009 he married his girlfriend Isabell, who is a handball player (Buxtehuder SV), too.

They are the only family in Germany who has a handball player in both the men and the women national team.