Horizons is a member of
- Americas Policy Group
- Canadian Council for International Cooperation
- Ontario Council for International Cooperation
Horizons works in partnership with
- Canadian International Development Agency
- Canadian Staff Union – Ontario Component
- Caritas Germany
- Communications, Energy and Paperworkers Union of Canada (CEP)
- GROOTS Canada
- GROOTS International
- Groupe d’Entraide Internationale Spirale
- Huairou Commission
- Jamaican Self Help
- Ontario Public Service Employees Union (OPSEU)
- PARN -Your Community AIDS Resource Network
- United Church of Canada
- Voices on the Border
- YMCA Northumberland
Latin America News & Resources
- Amnesty International – Americas
- BBC World News – the Americas
- Centre for Research on Latin America and the Caribbean
- Guatemala Human Rights Commission/USA
- Human Rights Watch – Americas
- Maquila Solidarity Network
- Mayan Territory
- Network in Solidarity with the People of Guatemala (NISGUA)
- Rights Action
- Upside Down World
- Washington Office on Latin America
