National Democratic Front of Bodoland (NDFB)
United People's Democratic Solidarity (UPDS)
Kamtapur Liberation Organisation (KLO)
Bodo Liberation Tiger Force (BLTF)
Dima Halim Daogah (DHD)
Karbi National Volunteers (KNV)
Rabha National Security Force (RNSF)
Koch-Rajbongshi Liberation Organisation (KRLO)
Hmar People's Convention- Democracy (HPC-D)
Karbi People's Front (KPF)
Tiwa National Revolutionary Force (TNRF)
Bircha Commando Force (BCF)
Bengali Tiger Force (BTF)
Adivasi Security Force (ASF)
All Assam Adivasi Suraksha Samiti (AAASS)
Gorkha Tiger Force (GTF)
Barak Valley Youth Liberation Front (BVYLF)
United Liberation Front of Barak Valley
United National Liberation Front (UNLF)
People's Liberation Army (PLA)
People's Revolutionary Party of Kangleipak (PREPAK)
The above mentioned three groups now operate from a unified platform,
the Manipur People's Liberation Front (MPLF)
Kangleipak Communist Party (KCP)
Kanglei Yawol Kanna Lup (KYKL)
Manipur Liberation Tiger Army (MLTA)
Iripak Kanba Lup (IKL)
People's Republican Army (PRA)
Kangleipak Kanba Kanglup (KKK)
Kangleipak Liberation Organisation (KLO)
Revolutionary Joint Committee (RJC)
National Socialist Council of Nagaland -- Isak-Muivah (NSCN-IM)
People's United Liberation Front (PULF)
Kuki National Army (KNA)
Kuki Revolutionary Army (KRA)
Kuki National Organisation (KNO)
Kuki Independent Army (KIA)
Kuki Defence Force (KDF)
Kuki International Force (KIF)
Kuki National Volunteers (KNV)
Kuki Liberation Front (KLF)
Kuki Security Force (KSF)
Kuki Liberation Army (KLA)
Kuki Revolutionary Front (KRF)
United Kuki Liberation Front (UKLF)
Hmar People's Convention (HPC)
Hmar People's Convention- Democracy (HPC-D)
Hmar Revolutionary Front (HRF)
Zomi Revolutionary Army (ZRA)
Zomi Revolutionary Volunteers (ZRV)
Indigenous People's Revolutionary Alliance(IRPA)
Kom Rem People's Convention (KRPC)
Chin Kuki Revolutionary Front (CKRF)
Hynniewtrep National Liberation Council (HNLC)
Achik National Volunteer Council (ANVC)
People's Liberation Front of Meghalaya (PLF-M)
Hajong United Liberation Army (HULA)
National Socialist Council of Nagaland (Isak-Muivah) – NSCN(IM)
National Socialist Council of Nagaland (Khaplang) – NSCN (K)
Naga National Council (Adino) – NNC (Adino)
Babbar Khalsa International (BKI)
Khalistan Zindabad Force (KZF)
International Sikh Youth Federation (ISYF)
Khalistan Commando Force (KCF)
All-India Sikh Students Federation (AISSF)
Bhindrawala Tigers Force of Khalistan (BTFK)
Khalistan Liberation Army (KLA)
Khalistan Liberation Front (KLF)
Khalistan Armed Force (KAF)
Dashmesh Regiment
Khalistan Liberation Organisation (KLO)
Khalistan National Army (KNA)
National Liberation Front of Tripura (NLFT)
All Tripura Tiger Force (ATTF)
Tripura Liberation Organisation Front (TLOF)
United Bengali Liberation Front (UBLF)
Tripura Tribal Volunteer Force (TTVF)
Tripura Armed Tribal Commando Force (TATCF)
Tripura Tribal Democratic Force (TTDF)
Tripura Tribal Youth Force (TTYF)
Tripura Liberation Force (TLF)
Tripura Defence Force (TDF)
All Tripura Volunteer Force (ATVF)
Tribal Commando Force (TCF)
Tripura Tribal Youth Force (TTYF)
All Tripura Bharat Suraksha Force (ATBSF)
Tripura Tribal Action Committee Force (TTACF) Socialist Democratic
Front of Tripura (SDFT)
All Tripura National Force (ATNF)
Tripura Tribal Sengkrak Force (TTSF)
Tiger Commando Force (TCF)
Tripura Mukti Police (TMP)
Tripura Rajya Raksha Bahini (TRRB)
Tripura State Volunteers (TSV)
Tripura National Democratic Tribal Force (TNDTF)
National Militia of Tripura (NMT)
All Tripura Bengali Regiment (ATBR)
Bangla Mukti Sena (BMS)
All Tripura Liberation Organisation (ATLO)
Tripura National Army (TNA)
Tripura State Volunteers (TSV)
Borok National Council of Tripura (BNCT)
Mizoram
Bru National Liberation Front
Hmar People's Convention- Democracy (HPC-D)
Arunachal Pradesh
Arunachal Dragon Force (ADF)
Left-wing Extremist groups
People's Guerrilla Army
People's War Group
Maoist Communist Centre
Communist Party of India-Maoist (CPI-Maoist)
Communist Party of India (Marxist Leninist) Janashakti