Bajaeolis bertschi is a species of sea slug, specifically an aeolid nudibranch. It is a marine gastropod mollusc in the family Facelinidae, and the only species in the genus Bajaeolis.
The holotype of this species was found at 10 m depth at Punta la Gringa, BahÃÂa de los ÃÂngeles, on the Gulf of California coast of Mexico. Additional specimens used in the original description were from nearby Isla de Corona and from Islas Perlas, BahÃÂa de Panama, Panama. It has also been reported from Northern Peru.