The Yser Medal (French: Médaille de l'Yser, Dutch: Medaille van de IJzer) was a Belgian campaign medal of World War I, established on 18 October 1918 to denote distinguished service during the 1914 Battle of the Yser in which the Belgian Army stopped the German advance of the German invasion of Belgium.

The medal could also be awarded to foreign nationals, members of allied military forces who took part in the Battle of the Yser.

[1] The Yser Medal was worn on the left side of the chest and when in the presence of other awards of Belgium, was placed directly after the Croix de Guerre (War Cross).

The obverse bore a nude, helmeted man holding a lance (indicating the halting of the advance of the German forces), to his right, the relief inscription on three lines "17-31 OCT 1914".

[1] The medal was suspended by a ring through the suspension loop to a red silk moiré ribbon with wide black edge stripes.