Languages by language family/Northwest Sumatra-Barrier Islands

◂ Austronesian languages ◂ Malayo-Polynesian languages

▸ Northwest Sumatra-Barrier Islands languages:

• Nuclear Barrier Islands languages (see below)
• Batakic (or Batak) languages (see below)
• Gayo (or Gajo) [gay] (disabled)
  • Bobasan
  • Dorot
  • Serbodjadi
  • Tampur

▸ Batakic (or Batak) languages:

• Northern Batak languages (see below)
• Southern Batak languages (see below)

▸ Northern Batak languages:

• Batak Dairi (or Pakpak, Pakpak Dairi, Dairi) [btd] (disabled)
• Batak Alas-Kluet (or Alas-Kluet Batak [btz] (disabled)
  • Alas
• Batak Karo (or Karo Batak, Karo-Batak) [btx] (disabled)
  • Singkil

▸ Southern Batak languages:

• Tobaic languages (see below)
• Batak Simalungun (or Simelungan, Timur) [bts] (disabled)

▸ Tobaic languages:

• Angkola-Mandailing languages (see below)
• Batak Toba (or Toba Batak, Batta) [bbc]

▸ Angkola-Mandailing languages:

• Batak Angkola (or Angkola, Anakola) [akb] (disabled)
• Batak Mandailing (or Mandailing Batak, Batta) [btm]

▸ Nuclear Barrier Islands languages:

• Mentawai-Nias-Sikule languages (see below)
• Simeulue (or Simeuloë, Simalur, Simulul, Long Bano) [smr] (disabled)

▸ Mentawai-Nias-Sikule languages:

• Nias-Sikule languages (see below)
• Mentawai (or Mentawei, Mentawei-Engano, Mentawi) [mwv]
  • North Siberut
  • Pagai
  • Sakalagan
  • Saumanganja
  • Silabu
  • Simalegi
  • Sipura
  • South Siberut
  • Taikaku

▸ Nias-Sikule languages:

• Sikule (or Sikhule, Sichule, Wali Banuah) [skh] (disabled)
  • Lekon
  • Tapah
• Nias [nia]
  • Central Nias
  • Nias Selatan (or Batu (Indonesia))
  • Nias Utara (or Nuclear Nias)