Abacopteris is a small genus of ferns in the family Thelypteridaceae.

Species in the genus usually have long-creeping rhizomes, with brown linear-lanceolate scales that extend onto the base of the stipe (stalk of the leaf).

[2] Leaf blades are green in color and thin to leathery in texture.

[2] Abacopteris was previously sunk into Pronephrium but was restored as a full genus as a result of a phylogenetic study of the family Thelypteridaceae.

[3][2] As of June 2022[update], World Ferns accepted the following species:[1]