- Guest editor for special issue on Transitional Justice in Africa for The Journal of British Academy, UK. June 2021. 
- Guest Editor Journal of Social Encounters. St. John’s University, Minnesota, USA. Special Issue: Democracy and Political Change, March 2022. 
- (2022) Opongo, Elias O., and Timothy Murithi. Elections, Violence and Transitional Justice in Africa. New York: Routledge. 
- (2021) Elias Opongo and Paul Bere (Eds.) African Theology in 21st Century: A Call to Baraza. Nairobi: Paulines Publications Africa. 
- (2021) Elias Opongo and Marco Moerschbacher (Eds) Catholic Social Teaching and Common Good in Africa. Nairobi: Paulines Publications Africa. 
- (2020) Ethics of War and Peacebuilding: The Unfinished Business. Nairobi: Hekima University College. 
- ( 2 0 1 9 ) Elias Opongo (ed), Religious Extremism and Violence in Africa: Reviewing the Practice of Intervention & Interreligious Dialogue. Nairobi: Paulines Publications Africa. 
- (2018) Elias Opongo (ed), Pope Francis on Good Governance and Accountability in Africa: Nairobi: Paulines Publications Africa. 
- (2018) Elias Opongo (ed), Extractive Industries in Africa. Nairobi: Paulines Publications Africa. 
- (2017) Elias Opongo & Felix Phiri, Religious Extremism and Violence in Tanzania: A Case Study of Dar Es Salaam and Zanzibar. Nairobi: Kolbe Press. 
- (2016) Elias Opongo et al (eds), Transitional Justice in Post-Conflict Societies in Africa. Nairobi: Paulines Publications Africa. 
- (2016) Elias Opongo, Informal Mining and Family Vulnerability in Kenya, Zambia and Zimbabwe. Nairobi: Kolbe Press. 
- (2015) Elias Opongo and D. Chikwekwete, Building Social Conscience Through Continuing Formation of the Laity: Focus on Catholic Professionals. Harare: AFCAST. 
- (2014) Elias Opongo (ed), Catholic Leadership in Peacebuilding. Nairobi: Paulines Publications Africa. 
- (2008) Elias Opongo (ed), Peace Weavers: Methodologies of Peace Building in Africa. Nairobi: Paulines Publications Africa. 
- (2007) Elias Opongo & A.E. Orobator, Faith Doing Justice: A Manual for Social Analysis, Catholic Social Teachings and Social Justice. Nairobi: Paulines Publications Africa. 
- (2006) Elias Opongo, Making Choices for Peace: Aid Agencies in Field Diplomacy. Nairobi: Paulines Publications Africa.