Tacumshin Lake () is a lake in Tacumshane, in the southeast of County Wexford, Ireland. It is designated as a Special Protection Area (SPA) under the EU Bird Directive (EC/79/409) and a Special Area of Conservation by the National Parks and Wildlife Services.
Tacumshin Lake is a favourite with bird watchers. It attracts some rare American waders in Autumn, as well as internationally important concentrations of Bewick's swans, Brent geese, wigeon, oystercatchers, golden plover and lapwing.