The following organizations have endorsed the 2026 Ottawa May Day March:
- ACORN Ottawa
- Association of Professors of the University of Ottawa
- Autistic and Neurodivergent Liberation Front of Ottawa
- Canadian Association of Professional Employees
- Canadian Centre for Women’s Empowerment
- Canadian Union of Public Employees Local 4600
- Carleton for Palestine Coalition
- Carleton University Human Rights Society
- Centretown Tenant Power
- Change Course
- Climate Justice Ottawa
- Coalition Against Proposed Prisons
- Communist Party of Canada – Rosa Luxemburg Club (Ottawa)
- Criminalization and Punishment Education Project
- Direct Action Ottawa
- Education for Liberation Collective
- Food Not Bombs – Ottawa chapter
- Horizon Ottawa
- Independent Jewish Voices – Carleton
- Independent Jewish Voices – Ottawa
- Labour for Palestine – Ottawa
- Last Generation Canada
- Lowertown Tenants Union
- Migrante Ottawa
- Ontario Coalition for Human Rights in the Philippines
- Ottawa Abortion Doula Collective
- Ottawa Anarchist Bookfair
- Ottawa Healthcare Professionals for Palestine
- Ottawa Mental Health Workers for Palestine
- Ottawa Peace Council
- Ottawa Safer Air Collective
- Palestine Solidarity Ottawa Centre
- Palestinian Youth Movement (Ottawa)
- Public Service Alliance of Canada – National Capital Region
- Punch Up Collective
- Resistance Archives
- Resource Movement Canada
- Sandy Hill Tenants
- Science for the People
- Shut Down CANSEC
- Student Mobilization Committee
- Tempest Collective Ottawa
- Unifor Local 567
- Workers’ Education and Rights Collective
- Young Communist League – Ottawa Donalda Charron Club
Organizations that agree with the May Day March Basis of Unity are invited to endorse the march. If your organization would like to endorse the march, contact us at info@maydayottawa.org.