Characiella is a genus of green algae in the family Characiaceae, containing the single species Characiella rukwae.

[1] Characiella rukwae consists of colonies of cells embedded in a gelatinous matrix.

There is one central, stellate chloroplast with a pyrenoid at the center.

[1] The mode of reproduction is unknown,[1] although it is suspected to form zoospores with two flagella.

[3] The genus is thus poorly known and requires modern reinvestigation.