What enables some cities to drive the transition to a circular economy so effectively? Success requires more than just cutting-edge technology or ambitious policy targets. In Yokohama, our...
Green Hub in Asia
Yokohama’s Circular Journey: How Yokohama Empowers Civic Engagement
Minato Mirai 21, Yokohama’s leading waterfront district supporting innovation and sustainable city initiatives.Reducing household waste by 43% in a massive, growing metropolis is no small feat. This...
Yokohama leads Asian Circular Cities Declaration as first signatory at ASCC 2025
On November 25–26, at the Asia Smart City Conference (ASCC) 2025 in Yokohama, the establishment of the Asian Circular Cities Declaration was announced. The Circular Cities Declaration is a framework...
Yokohama Leads Climate Week NYC Event on U.S.-Japan Intercity Climate Action
On September 25, 2025, the City of Yokohama led an official event during Climate Week NYC 2025 (September 21–28), one of the world’s largest climate-focused gatherings held annually in New York...
Yokohama Presents its Green City Initiatives at 5th UN Forum of Mayors
The Director of the European Office attended the Fifth United Nations Forum of Mayors, held in Geneva, Switzerland, from October 6 to 7, 2025, as a representative of Yokohama Mayor Takeharu...
Taiwan Design Research Institute, Firms Visit Yokohama for Circular Economy
In August 2025, a delegation of about 20 members from the Taiwan Design Research Institute (TDRI), along with companies and startups working on circular economy and circular design, visited Japan to...
Gaining inspiration from Europe for advancing Yokohama’s circular economy
On August 21, the City of Yokohama Europe Representative Office visited the ICLEI European Secretariat in Freiburg to meet with Regional Director Wolfgang Teubner and ICLEI’s Circular Economy team...
Yokohama Mayor Meets UN Secretary-General Guterres at TICAD9 to Deepen Global Cooperation
On Thursday, August 21, Mayor of Yokohama, Japan, Takeharu Yamanaka held talks with United Nations Secretary-General António Guterres, who was visiting Yokohama to attend the 9th Tokyo International...
Sharing Yokohama’s Experience of Waste Reduction: “Towards Zero Waste” with ASEAN Cities
Ryoichiro Orii, Director General of the International Affairs Bureau, represented the City of Yokohama at a City Talk Session titled Towards Zero Waste. He presented how Yokohama has succeeded in...
New Global Toolkit Highlights Yokohama as Leading Example of City-Led Diplomacy
In July 2025, Yokohama was featured in a global strategic toolkit for city, state, and regional governments on engaging internationally. The Toolkit, titled “Global Engagement, Local Benefits: A...
UN Local2030 Coalition Spotlights Yokohama’s Local Actions to Accelerate Global SDGs
The United Nations High-Level Political Forum on Sustainable Development (HLPF) serves as a global policy platform where countries and stakeholders come together to review and share progress on the...
Yokohama’s Circular Society and Civic Engagement Showcased at UN High-Level Forum
The United Nations High-Level Political Forum on Sustainable Development (HLPF) serves as the central global platform to review progress on the Sustainable Development Goals (SDGs). Held every July...
U.S. Climate-Tech Investors Gather in Yokohama for the CleanLeap Climate Tech Summit
On May 26, 2025, CleanLeap, based in Silicon Valley and a supporter of climate-tech startups across the United States, hosted the CleanLeap Climate Tech Summit at TECH HUB YOKOHAMA. A total of 54...
Yokohama presents its Circular City Initiatives at the 4th Sustainability Week Asia
Yokohama was the only municipality to participate in 4th Sustainability Week Asia, hosted by Economist Impact and held in Bangkok on March 25-26, 2025. Under the theme “From Idealism to...
Yokohama presents its green initiatives at the World Cities Summit Mayors Forum 2025
Ryoichiro Orii, Director of the International Bureau of the City of Yokohama, spoke at the World Cities Summit Mayor's Forum 2025, which took place in Vienna, Austria, from 2-4 July 2025. He...
Yokohama Europe Office took part in international conference for the 10th anniversary of the Paris Agreement
On 23 June 2025, the Chief Representative of the European Office of the City of Yokohama, on behalf of Mayor Yamanaka, attended an international conference in Paris to mark the tenth anniversary of...
Yokohama Matching Program 2025 – Selected Companies
The Yokohama Matching Program, Yokohama’s newest initiative to connect international startups with business opportunities in Japan, attracted strong global interest in its inaugural year. Designed...
STYLE100 – One hundred ways of sustainable living, made in Yokohama to be shared with the world
Yokohama City has embarked on a bold initiative to build a sustainable and attractive new society through green innovation. In collaboration with citizens, businesses, and organizations, the city is...

















