Triploceras is a genus of desmid (a type of green alga) in the family Desmidiaceae.

[3] Triploceras is easily recognizable due to its elongated shape and polar lobes.

[3] The similar genus Triplastrum also has polar spines, but lacks protuberances along the sides of the cell.

[3][4] Despite the similar rod-like shape, it is not closely related to other rod-shaped genera such as Pleurotaenium or Triplastrum.

Another species, T. splendens is rare and restricted to Southeast Asia and northern Australia.