Wilhelm Bernardo Walter Cramer (1 May 1886 – 14 November 1944) was a German businessman from Leipzig and a member of the failed 20 July Plot to assassinate Adolf Hitler at the Wolf's Lair in East Prussia.

In 1919, Cramer became managing director of the Kammgarnspinnerei Gautzsch AG, a worsted yarn spinning mill.

From 1923, he was on the board of directors of the Leipziger Kammgarnspinnerei Stöhr & Co. AG, another corporation in the same industry.

In the first half of the 1940s, Cramer took part in civilian resistance against the Nazi régime with Leipzig's former mayor Carl Friedrich Goerdeler (1884-1945).

The City of Leipzig also honoured Walter Cramer with a monument in the Johannapark in 1996.