Kobresia simpliciuscula is a species of sedge known by the common names false sedge, simple bog sedge and simple kobresia. It has a circumpolar distribution, occurring throughout the northern latitudes of the Northern Hemisphere. This perennial plant forms tufts of several triangular stems reaching up to 50 centimeters in height. It lacks rhizomes. The leaves are up to 20 centimeters long. The inflorescence contains up to 12 spikes of flowers. Light is required for the seeds to germinate.