Japan PI Tokyo

Private Investigators serving the Greater Kanto Area

Japan’s Premiere Bilingual PI Agency

About Us

Japan PI Inc. is a bilingual full service Private Investigator Agency with an office in Tokyo Japan. We’ve been in business since 2002, and our lead agent, Goro Koyama, has 27 years of experience as a Private Detective. We are the only agency where you can communicate with field agents directly in English.


Japan PI Inc.

2-6-20-504 Kitashinshuku, Shinjuku-ku,
Tōkyō-to 169-0074, Japan
P. 03-3362-3939

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Tokyo Private Investigator on Surveillance
Who We Serve
  • Individuals
  • Businesses
  • Investors
  • Insurance Companies
  • Law Firms & Attorneys

Services We Offer:

  • Surveillance
  • People Search
  • Find Lost Family
  • Background Checks
  • Company Investigations
  • Corporate Due Diligence
  • Service of Process

To learn more about Japan PI:

  • Who we are & what we stand for
  • Who we serve
  • Why we are better
  • Services we offer

Head over to our home page to learn more.

Learn More About Japan PI

"I cannot tell you how pleased I am for your work... Perhaps we shall meet some day, but if not, I hope you know you have made a fundamental difference in my life and with several other people.  In my culture, we have a word, mensch, which means a really good person, one whom you can trust and respect.  You, sir, are a mensch.  It is an honor to have worked with you."

Mark D, USA

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