||31 January 1956
Klaus Ploghaus (born 31 January 1956 in Gelnhausen, Hesse) was a West German hammer thrower.
His biggest success came at the 1984 Summer Olympics held in Los Angeles, United States where he won the bronze medal. In addition finished twelfth at the 1978 European Championships, eighth at the 1982 European Championships, sixth at the 1983 World Championships and ninth at the 1986 European Championships.
His personal best throw was 81.32 metres, achieved in May 1986 in Paderborn. This ranks him seventh among German hammer throwers, behind Ralf Haber, Heinz Weis, Karsten Kobs, Günter Rodehau, Holger Klose and Christoph Sahner.