Palaeoscinis (meaning "ancient oscine") is an extinct genus of songbird described in 1957 from the middle Miocene of the Monterey Formation in Santa Barbara, California.

The fossil was found in marine sediments, but the anatomy of Palaeoscinis indicates that it was a songbird rather than a seabird.

Feather imprints on the slab suggest the wings may have been relatively short, although it is possible that they were not fully preserved.

However, it was regarded as similar and possibly related to the Pycnonotidae (bulbuls), Bombycillidae (waxwings), Corvidae, or Cinclidae (dippers) by Howard (1957).

It was provisionally allocated as closest to the Pycnonotidae over the other families by Wetmore (1960) based on its proportions, although this relationship is not certain.