Mariko Olivia McTier

Co-Founder and Director, Social Innovation Japan

Mariko is Co-Founder and Director of Social Innovation Japan and Japan's first free water refill app, mymizu. A former journalist, she has planned, managed and delivered international, multi-stakeholder projects for government, corporations and social ventures, including as Programme Manager for a UK government campaign to facilitate innovation partnerships between the UK and Japan and as Overseas Marketing lead for Earth Company, an award-winning social enterprise. Mariko now leverages her experience to build greater cross-sector engagement with social and environmental issues via Social Innovation Japan (SIJ), co-founded mymizu, a circular economy initiative borne out of SIJ, and is the Tokyo lead for the Circular Economy Club. She was featured in Forbes JAPAN’s October 2020 edition in their series “Self-Made Women”.

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