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A Platform for Social Action in Japan

A Platform for
Social Action in Japan

 

We unleash the power of people to create, accelerate and support bold solutions for positive change

We are a Japan-based, award-winning international organisation of social impact and sustainability specialists, focused on co-creating solutions and building a new era of sustainable and equitable development. Since 2017, we’ve been working with global brands, governments & social changemakers to tackle real-world problems and create lasting change.

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6-week program for women social entrepreneurs

Supporting women to create purpose-driven businesses, from idea to action. We look forward to your applications!

What we do

 
 
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01/ Creating Social Innovations

We build bold, people-centered products and services that drive systemic change.
 

02/ Corporate Impact & Employee Engagement

We help businesses re-frame their role in society, build capacity for social impact, and become leaders of change.
 
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03/ Unconventional Training, Development and Learning

Through our unconventional learning and coaching programs, we help individuals and organisations understand today’s big problems, and inspire and support them to take action.
 
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04/ Community Building

We bring together and support bold changemakers on the front lines of change.
 
 
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Latest News

News
Women in Tech Global Summit, Osaka Expo 2025
Women in Tech Global Summit, Osaka Expo 2025

Co-CEO Robin will be speaking at the Women in Tech Global Summit 2025 at the Osaka 2025 Expo! 🌏

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Helena Powers - 6-Week Women Social Entrepreneurship Program
Helena Powers - 6-Week Women Social Entrepreneurship Program

Introducing "Helena Powers", our program for women social entrepreneurs! 📣

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ASEAN Blue Innovation Expo, Jakarta
ASEAN Blue Innovation Expo, Jakarta

SIJ in Jakarta: 60 of ASEAN's top impact-driven startups showcased their Blue Economy solutions!

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SIJ in Condé Nast’s 'Bright Ideas in Travel 2024' List!
SIJ in Condé Nast’s 'Bright Ideas in Travel 2024' List!

SIJ's environmental platform, mymizu, is featured on Condé Nast Traveler’s prestigious “Bright Ideas in Travel 2024” list! 🌍✨

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Keynote Speech, Osaka Start Line
Keynote Speech, Osaka Start Line

Sharing stories of business as a force for good at the "START LINE OSAKA Beyond Borders!" conference in Osaka!

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Social Entrepreneurship Workshop @ Tohoku University
Social Entrepreneurship Workshop @ Tohoku University

Leading a workshop on social entrepreneurship - how social business can tackle real-world challenges?

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University of Pennsylvania, Special Session
University of Pennsylvania, Special Session

SIJ’s Co-CEO Robin will be speaking at a special online session with graduate students from the University of Pennsylvania Graduate School of Social Policy and Social Practice!

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Seminar: Transformational Digital Leadership
Seminar: Transformational Digital Leadership

SIJ's Co-CEO Robin will be speaking at Temple University, exploring how we can drive meaningful change in the digital age.

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SIJ Co-CEO Robin selected as a 2024-2025 Obama Leader
SIJ Co-CEO Robin selected as a 2024-2025 Obama Leader

Co-CEO Robin Takashi Lewis has been selected as an Obama Leader in the Obama Foundation's Leaders Asia-Pacific program for 2024-2025!

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Campus Changemakers Summit Vol. 2 @ Tokyo University (12 Oct)
Campus Changemakers Summit Vol. 2 @ Tokyo University (12 Oct)

Calling all students! The Campus Changemakers Summit is back 🚀

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SIJ selected for prestigious "APAC Sustainability Seed Fund 2.0"
SIJ selected for prestigious "APAC Sustainability Seed Fund 2.0"

We're thrilled to announce that SIJ has been selected as one of the recipients of the $5 million “APAC Sustainability Seed Fund 2.0”!

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Climate Fresk Workshop, 15 September 2024
Climate Fresk Workshop, 15 September 2024

We're excited to host a free "Climate Fresk" workshop on 15th September at Impact Hub Tokyo. Join us for a fun afternoon to learn about and take action on the climate crisis!

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SIJ x Tech For Impact Summit 2024
SIJ x Tech For Impact Summit 2024

Social Innovation Japan is a community partner for the upcoming Tech for Impact Summit in Tokyo! 🗼

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Speaking at Nagasaki's Peace-preneur Forum 2024
Speaking at Nagasaki's Peace-preneur Forum 2024

SIJ’s Co-CEO Robin was invited to speak at the Nagasaki Peace-Preneur Forum, an international conference on the theme of peacebuilding, innovation and entrepreneurship.

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Special Public Lecture on Social Business & Sustainability @ Okayama University
Special Public Lecture on Social Business & Sustainability @ Okayama University

SIJ’s Co-CEO Robin will give a special lecture on “Sustainability & Social Business in Japan: a Growing Movement for Positive Change” at Okayama University

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Walk & Talk for Changemakers
Walk & Talk for Changemakers

Slowing down: we hosted a “Walk and Talk” for changemakers in Kamakura!

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Takeoff Tokyo: Community Partnership Announcement
Takeoff Tokyo: Community Partnership Announcement

SIJ is an official community partner of Takeoff Tokyo!

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Wellbeing, Sustainability & ESG Workshop
Wellbeing, Sustainability & ESG Workshop

SIJ ran an intensive workshop for executives, featuring mindfulness exercises, a team sustainability quiz, ideation activities, and more!

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ASEAN-Japan Environmental Leaders Symposium
ASEAN-Japan Environmental Leaders Symposium

SIJ’s Co-CEO will be speaking at today’s ASEAN-Japan Young Environmental Leaders Network Symposium!

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Social Entrepreneurship Workshop @ International Labour Organisation (ITCILO)
Social Entrepreneurship Workshop @ International Labour Organisation (ITCILO)

SIJ’s Co-CEO held a workshop on "From Vision to Results: The Social Entrepreneurship Perspective" for the International Training Center of the International Labour Organisation (ITCILO).

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Our Impact

 
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Awards

 
 
 
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Media

Our Co-CEOs

 
 
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Mariko McTier

マクティア マリコ

Mariko is an award-winning entrepreneur and consultant who finds creative ways to engage people in redesigning systems for a circular economy. She co-founded Social Innovation Japan and mymizu, a free water refill app that uses refilling as a hook for wider citizen action. She has worked extensively with global brands, governments, and startups to create systemic change for a more sustainable future. Mariko has served as a Council Member for the World Economic Forum's "Global Future Council on Japan" and as a guest advisor with the Japanese Ministry of Environment.

Mariko's work has earned multiple awards both in Japan and internationally such as Business Insider Japan's "Beyond Millennials" Award and the iF World Design Guide Social Impact Prize. She is a regular contributor on local and national radio, and her interviews have been featured in media such as Forbes, Nikkei, BBC and VOGUE.
 
 
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Robin Takashi Lewis

ルイス・ロビン敬

Robin is a social entrepreneur based in Japan, recently recognised by MIT Technology Review in its “Innovators Under-35” awards. For over 10 years, Robin has worked with social enterprises, NGOs and inter-governmental organisations (including consultant roles at the World Bank and UNDP), and has managed humanitarian operations in countries such as Haiti, Nepal, Vanuatu and Mozambique. Robin is a Board Member of Shibuya QWS (one of Japan’s leading innovation hubs), advisor / mentor for several social impact organisations, and a TED x Speaker. He graduated with a M.A. in International Business from the University of Edinburgh, UK.
 
 
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Contact us