Agricultural Research and Innovation Ontario (ARIO ), is a provincial Crown agency of the Government of Ontario that supports agricultural research, innovation, and knowledge transfer in the province's agrifood sector.

Established in 1962 as the Agricultural Research Institute of Ontario (), the agency amanages agricultural research priorities and infrastructure through partnerships with government, industry, and academic institutions. It was renamed in 2024 following amendments to the Agricultural Research Institute of Ontario Act that expanded its mandate to emphasize innovation, commercialization, and strategic collaboration.

ARIO is headquartered in Guelph, Ontario, and maintains a longstanding partnership with the University of Guelph through the Ontario Agri-Food Innovation Alliance.

Indigenous engagement initiatives In 2024–2025, Indigenous engagement initiatives encouraged relationship-building with Indigenous communities and organizations, board education on Indigenous-led research, implementation of land acknowledgements at research facilities, and support for research and knowledge co-developed with Indigenous researchers and communities, particularly through Northern Ontario agricultural research programs.

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