Oregoniplana opisthopora is a species of planarian in the family Cercyridae.

Oregoniplana opisthopora is about 2 mm (0.079 in) long, and is a brownish-grey color.

It has spots indicating its gonads, pharynx and copulatory bulb.

It has unicellular papillae all along the margin of its body.

This flatworm- (or platyhelminth-) related article is a stub.