Wieslochia weissi is an extinct species of passerine bird from the early Oligocene (27.8 - 33.9 Ma) of Germany. Remains of this species have been found in a clay pit in Frauenweiler near Wiesloch, Germany. The holotype is a dissociated skeleton on two slabs. Another specimen consisting on a mandible and a cranium has been found in the same horyzon. The taxonomic affinities of Wieslochia are not well understood as it shares some similarities with suboscines but it seems more primitive in other features.