Tetradesmus dimorphus is a freshwater unicellular green algae in the class Chlorophyceae.

[2] Tetradesmus dimorphus consists of colonies of two, four or eight cells, which are arranged linearly or in a zigzag fashion, in one or two rows.

Cells are (5–)6–25(–27) μm long and 2–9.4(–14) μm wide, broadly spindle-shaped, tapered to points at both ends.

The inner cells are straight, while marginal cells have ends that are slightly curved outwards.

This Chlorophyceae-related article is a stub.