Walter Arthur Reek (26 January 1878 – 12/19 May 1933), was a social democrat politician in Germany and the Free City of Danzig.
He was a member of the Weimar National Assembly, the Danzig Volkstag parliament and mayor of Neuteich (Nowy Staw).
He was trained as a carpenter and spent his journeyman years from 1895 to 1900 in Germany, Switzerland and Austria.
From 1900 to 1902 he served in the Prussian Army and became the chairman of the Central Federation of carpenters in Danzig in 1902.
During World War I Reek initially served in the German army but started to work in several positions in the Kriegsernährungsamt in Danzig in 1916.