Top Private Investigator Office in Japan - PIO: Expert Detective & Investigative Services.

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PIO: Private Investigator Office

PIO stands for Private Investigator Office, a premier detective and investigative agency located in Japan.
With offices spread across Tokyo, Yokohama, Nagoya, Osaka, and Hiroshima, we have been dedicatedly serving our clients since our inception in 1972.


Experts in Investigation and Inquiry

Whether it's gathering evidence for court cases or addressing personal concerns, trust us to handle it all. PIO boasts a rich history and proven track record in the field of investigation. From collecting evidence during legal disputes, addressing complex issues for corporations, to personal consultations, we've catered to a wide range of investigative needs. One of our core strengths lies in the seasoned detectives that form our team. These experienced professionals approach each case with profound knowledge and specialized skills. Furthermore, we adhere to strict investigative standards, ensuring the highest level of investigative prowess. Even for cases deemed challenging by other agencies, we commit our full resources and expertise. No matter the issue, leverage our specialized knowledge and experience for the best solutions. Entrust your concerns and challenges to us with confidence.

Our Service Offerings

  • Surveillance

    We specialize in tracking missing individuals, investigating suspicions of infidelity, identifying dishonest employees, and uncovering insurance fraud. Our approach is to confidentially monitor individuals, documenting any irregular activities to provide you with the insights needed.
  • Business Background

    We conduct thorough investigations into company-related information, perform due diligence, and carry out background checks to provide you with a comprehensive understanding of the business landscape.
  • Employment Screening

    Our service encompasses a comprehensive review of employment history, education verification, and backgrounds/pre-employment due diligence. Additionally, we utilize social media & OSINT to ensure a thorough investigation into prospective candidates.
  • Intellectual Property

    We specialize in identifying and addressing issues related to counterfeited brand goods, forged items, parts, and trademark infringements, ensuring the protection of your intellectual property rights.
  • Missing Persons

    We specialize in locating missing individuals, whether they be children, spouses, lost contacts, runaways, or fugitives, utilizing a comprehensive approach to ensure their safe recovery.
  • Personal Background

    We conduct comprehensive personal background checks, covering aspects such as marital status, financial stability, and potential involvement in fraud, to provide you with a detailed insight into an individual's history and character.

Our Locations

  • PIO Tokyo

    30 Kanda Higashimatsushita-cho, Chiyoda-ku, Tokyo
    TEL: 03-3256-5311
  • PIO Yokohama

    3-8-13 Choja-machi, Naka-ku, Yokohama, Kanagawa Prefecture
    TEL: 045-319-4121
  • PIO Nagoya

    1-8-23 Marunouchi, Naka-ku, Nagoya, Aichi Prefecture
    TEL: 052-231-6686
  • PIO Osaka

    2-1 Kokubu-cho, Tennoji-ku, Osaka City
    TEL: 06-6773-4821
  • PIO Osaka North

    5-8-15 Nishi-Tenma, Kita-ku, Osaka City
    TEL: 06-6773-4821
  • PIO Hiroshima

    1-8 Hatchobori, Naka-ku, Hiroshima City, Hiroshima Prefecture
    TEL: 082-221-0223

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