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