MaRS Discovery District

MaRS Discovery District, is a North American urban innovation hub and a registered charity.

The not-for-profit corporation was founded in Toronto, Ontario, Canada in 2000. Its stated goal is to commercialize publicly funded medical research and other technologies with the help of local private enterprises and as such is a public-private partnership. As part of its mission MaRS says, "MaRS helps create successful global businesses from Canada's science, technology and social innovation.". The organization is currently led by Grace Lee Reynolds, Christine Bome, Nina Gazzola and Jason MacFarlane.

MaRS supports over 1,200 Canadian science and tech companies. These ventures have created over 33,000 jobs, generated $11.5B in revenue and contributed nearly $30B to Canada's GDP over the last decade.

MaRS's flagship program is the Capital Program. This program supports innovative Canadian startups in raising Venture Capital, helping them grow and scale in Canada. From 2010 to 2024 MaRS-supported ventures raised $19B+ and 13% of all venture capital raised in Canada goes to MaRS-supported ventures. This program was relaunched under the leadership of Liam Gill in October 2025.

MaRS Discovery District is a member organization of the Ontario Network of Engineers. MaRS is also a member of Life Sciences Central.

The name MaRS was originally drawn from a file name, and later attributed with the title "Medical and Related Sciences". It has since abandoned this association as it also works in other fields such as information and communications technology, engineering, and social innovation.