Palaeoglaux is a genus of fossil owl from the Eocene epoch. There are two known species, P. perrierensis from the Upper Eocene of Quercy, France and P. artophoron from the Middle Eocene Messel shales, Germany. The holotype of P. perrierensis is a partial left coracoid in the Collection Université Montpellier, accession number PRR 2585. There are four paratypes; the distal part of a left humerus (PRR2591), the proximal part of a left ulna (PRR 2571), the distal part of a left ulna (PRR 2578) and the distal part of a right tarsometatarsus (PRR 2576). The type specimen of P. artophoron are a fossil slab and counterslab containing most of the postcranial skeleton and some feather impressions. This specimen is in the collection of the Forschunginstitut Senckenberg, accession number SMF-ME 1144