Southeast Papuan
Bird's Tail Papuan Peninsula
Geographic distribution	Southeastern peninsula of New Guinea
Linguistic classification	Trans–New Guinea Southeast Papuan
Subdivisions	Koiarian Kwalean Manubaran Yareban–Mailuan Dagan
Language codes
Glottolog	None
Map: The Southeast Papuan languages of New Guinea   The Southeast Papuan languages   Other Trans–New Guinea languages   Other Papuan languages   Austronesian languages   Uninhabited

The Southeast Papuan or Papuan Peninsula ("Bird's Tail") languages are a group of half a dozen small families of Papuan languages in the "Bird's Tail" (southeastern peninsula) of New Guinea that are part of the Trans–New Guinea (TNG) phylum.

The languages are as follows:^[1]

• Dagan (Meneao Range)
• Owen Stanley Range
  • Koiarian (Koiari – Managalas Plateau)
  • Kwalean (Humene–Uare)
  • Manubaran (Mount Brown)
  • Mailu–Yareban
    • Yareban (Musa River)
    • Bauwaki
    • Mailuan (Cloudy Bay)

They have in common ya for 'you' (plural) instead of proto-TNG *gi.

Usher (2020) reconstructs the pronouns as:^[2]

	Owen Stanley		Meneao (Dagan)
	sg	pl	sg	pl
1	*na	?	*n[e/a]	*nu
2	*ga	*ja	*g[e/a]	*j[e/a]
3	*e (?)	*ie (?)	*me	*mV