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Maya Horii

Senior Partner, Tokyo

Advises public agencies, development institutions, investors, and private companies on challenges encompassing a range of strategic and organizational issues, including agriculture, energy, economic development, and private-sector development


Maya is a leader in the Public Sector Practice and a hub leader in the Organization Practice. Over the past few years, she has provided expert advice on organizational issues, including on organizational improvements for public-sector institutions and private companies, merger management, and development of HR and leadership skills. Previously, Maya worked for nearly 10 years in the Washington, DC, office with numerous public- and social-sector institutions and development organizations. She has also been involved in developing solutions in Africa and Asia for agriculture, economic development, energy development, and the provision of financial services for low-income earners.

Examples of Maya’s recent client projects include the following:

  • providing support for organizational integration in a merger project involving Japanese and US companies
  • helping to develop leadership skills for top management in a public-sector institution
  • determining the organizational health of a public-sector institution, proposing areas for improvement, and supporting implementation
  • planning for the transition to a new organizational structure at a development finance institution and providing support for implementation
  • developing the strategy for the introduction of a new organization at a development finance institution and providing support for organizational development
  • helping a multinational agribusiness to develop a go-to-market strategy to expand its penetration in Africa, India, and Southeast Asia
  • supporting the development and implementation of the delivery units needed to reform the electric-power sector in an African country
  • supporting the identification of strategic investments in emerging economies in a range of sectors (such as electric power, healthcare, small-and-medium-size-enterprise finance, agriculture, and switch to digital technologies)

Outside her client work, Maya has led various internal-knowledge-building initiatives on global growth and investment opportunities in agriculture, as well as on potential private-sector investments in emerging economies. She has also played an active role as a female leader in McKinsey’s in-house All In initiative.

Published work

How Asia can prepare for the future of work after COVID-19,” McKinsey & Company, April 2021

Organizing for speed: Agile as a means to transformation in Japan,” McKinsey & Company, November 2020

The future of work in Japan: Accelerating automation after COVID-19,” McKinsey & Company, July 2020

A more effective model for managing change in Japan could accelerate economic growth,” McKinsey & Company, July 2018

Past experience

African Development Bank

Mo Ibrahim Index of African Governance
Research assistant


John F. Kennedy School of Government, Harvard University
MA, public administration in international development

Harvard University
BA, social studies


Hands on Tokyo
Advisory Board

Asian University for Women
Japan Support Team