Carex elongata, the elongated sedge, is a species of flowering plant in the family Cyperaceae, native to Europe, the Caucasus, western Siberia, Kazakhstan, and the Altai.

[1][2] It occurs in boggy woodland and wet meadows, where it forms dense tussocks up to about 1 m tall.

Each trigonous stem is up to 80 cm long and rough with upward-pointing teeth on the edges.

The inflorescence consists of up to 18 golden-tinged spikes which are fairly tightly spaced at the top of the stem.

[6] It is thought that the seeds germinate on dead wood, which floats on the surface of the water, and thereby avoids inundation at the vulnerable seedling stage.