Below are the various domestic and international NGOs in Nigeria as of 2019.

List of nonprofit organizations in Nigeria

Abibimman Foundation
Abraham Adesanya Foundation
Abraham’s Children Foundation (ACF)
Abraham Omuya Foundation
Abia North Industrial Development Initiative
Able Reading Group
Academic Associate Peace Work
Academic Associates
Ace Development Initiatives
Achievers Development Centre
Achievers’ Multipurpose Cooperative Society
ACOLEX
Action Aid Nigeria
Action for Nigeria Integrity and Protection Network
Acts Generation- Women Empowerment and Gender Equality (ACTS Generation-GBO)
ADAWATER NGO (ADAWATER)
Addiction Reformation Commission International (ADRECOM)
Adenike Charity Foundation
Adonai Job Centre (Adonia Foundation)
Adventist Development and Relief Agency (ADRA)
Adventist Women’s Ministries
Advocacy Committee Against Hunger (ACAH)
Advocacy for the Support of Prisoners and Indigents Rights (ASPIR)
Advocacy for Widows Empowerment Foundation (ADwef)
Afican Youths For Transparency (AYFS)
Africa Alert Foundation
African Center for Rural Development and Environment (ACERDEN)
Africa Alive Nigeria (AA!)
Africa Hope Alive Initiative
African Initiative for Development Evaluation
Africa Millennium Global Care
Africa Youths International Development Foundation
Africal Alive Nigeria (AAN)
African Centre for Democratic Governance
African Childhood Care Network
African Children Broadcasting Network (ACBN)
African Children Renaissance Initiative
African Citizens Development Foundation (ACDF)
African Concern
African Development Network (ADNET)
African Enterprises Foundation
African Foundation for Development of Infrastructure and Social Services in Rural Communities
African Foundation for Education & Development
African Foundation for Peace and Love Initiatives (AFPLI)
African Girls Empowerment (AGE)
African Harvest Mission
African Hope Organisation (AHO)
Africa Heritage Institution (AHI)
African Institute for Strategic Studies (AISS)
African kingdoms Travel Club
African Leadership Forum
African Leadership Foundation (ALF)
African leprosy Resettlement Trust Nigeria (ALERT-F)
African Liberation Support Campaign Network (ALISC-NETWORK)
Africa Neighbourhood Empowerment Society (ANES)
African Network for the Prevention and Protection Against Child Abuse and Neglect Nigerian (ANPPCAN)
African Network for the Prevention, Protection Against Child Abuse and Neglect
Africa Middle East Progressive Initiative (AMEP-INITIATIVE)
African Refugee Foundation (AREF)
African Renaissance Foundation for Arts & Culture
African Strategic & Research Group (AFSTRAG)
African Underprivileged Children’s Foundation (AUCH)
African Women Cooperative Initiative
African Women Development Network
African Women Empowerment Guild (AWEG)
African Women Lawyers Association (AWLA) Nigeria
Africommunity Technology Development Center
Afro Center for Development, peace and Justice (AFRODEP)
Afro Foundation
Agape Foundation for Literacy and Rural Development. (AFLARD)
Agape Women Aglow International
Agatha Obiageli Aghedo Memorial Foundation
Agbe-Loba CMS Ltd., Ado-Ekiti
AgeCare Foundation
Agency for Eradication of Street Begging Among the Disabled Youth(AFESBAD)
Agenda for Good Governance
Agent for Empowerment & Sustainability Initiative
Agent of Communication and Development
Agwagune Women Development Association
Angels Discovery Circles Initiative
AIDS African
AIDS Alliance in Nigeria
AIDS and Pregnancy Prevention for Adolescents (APPA-IAM Pregnant)
AIDS Awareness Society (AAS)
AIDS Care Managers
AIDS Must Go Group
AIDSLLINE International
AIESEC Nigeria
Air Transport Services Senior Staff Association
Ajegunle Community Project
AJ’s Playgroup Foundation
Ajoke Ayisat Afolabi Foundation
Akadis Medicare
Akassa Community Development Programme
Akpabuyo Bakassi Green Movement (ABGREMO)
Akwaalink Foundry Development, Research and Training Centre
Akwamfon Sustainable Community Association
Alcohol Prevention Youth Initiative
Alheri Women Multi-Purpose Development Association (ALCO)
Alliance for Rural Development of Nigeria (ARDN)
All-Nigeria United Nations Students and Youth Association(ANUNSA)
Amaka Chiwuike-Uba Foundation (ACUF)
Ama Dialog Foundation (ADF)
Ameen Literacy Foundation (ALIF)
America Speaks
Amnesty International Nigeria
Amputee Association of Nigeria
Amsha Africa Foundation
Arms of Comfort
Anambra State Women’s Association
Ane Osiobe International Foundation (AneOsiobe)
Anglican Communion Women’s Organisation
Anglican Diocesan Development Services (ADDS)
Anitah and Delights
Annabelles – We Care
Anpez Centre for Environment and Development
Anti AIDS Youth Club (AYC)
Anti Corruption & Fraud organisation of Nigeria
Anti-AIDS Society of Nigeria (AASON)
ANTI-Child Abuse Society of Africa (ACASA)
Aqumamu Lioness Club
Arikoserere Philanthropic Foundation (APF)
Arise Nigerian Woman Foundation
Asabe Shehu Yar’Adua Foundation
Aseke Obaro Global Organisation (MR)
Associated Country Women of the World
Association for Community and Economic Development
Association for Community Development and Human Technology

Source: https://www.schooleen.com/list-of-ngos-in-nigeria/