Cladium californicum is a species of flowering plant in the sedge family known as California sawgrass.

It is native to the southwestern United States and northern Mexico where it grows in moist areas in a number of habitat types, often in alkaline soils.

Cladium californicum is a perennial herb with a hollow, erect, rounded stem 1–2 m (3 ft 3 in – 6 ft 7 in) tall.

The narrow leaves are flat and edged with small, sharp teeth.

The inflorescence is a large panicle of spikelets yielding oval-shaped, purplish-brown fruits.