Botryococcaceae is a family of green algae in the class Trebouxiophyceae.

Members of this family consist of irregular colonies of cells found free-floating or attached to a substrate.

Cells may be spherical, ellipsoidal, or ovoid with a chloroplast with or without a pyrenoid.

Reproduction occurs exclusively asexually by the formation of autospores.

[3] However, molecular phylogenetic studies have found that some genera placed in Botryococcaceae based on morphology alone are unrelated to Botryococcus; the genus Dictyosphaerium is now placed in the family Chlorellaceae.