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    AngelBacked
    TokyoUpdated September 2026

    Top 15 Angel Investors in Tokyo (2026)

    Tokyo is home to 270 angel investors and VCs in the AngelBacked database. The most active — ranked below by number of disclosed portfolio investments — include Reinier Mikami, Aiko Adachi and Tatsuya Kubo. Their portfolios concentrate in Information Technology (IT), Cybersecurity and Semiconductor.

    1. 1
      Reinier MikamiVice President at N/A
      96 portfolio investments

      Notable investments: National Cardiovascular Partners, Advance Health, Eaton, Genstar Capital

      Health CareHospitalsEmail
    2. 2
      Aiko AdachiPrincipal at N/A
      96 portfolio investments

      Notable investments: National Cardiovascular Partners, Advance Health, Eaton, Genstar Capital

      Health CareHospitalsEmail
    3. 3
      Tatsuya KuboManaging Director at N/A
      96 portfolio investments

      Notable investments: National Cardiovascular Partners, Advance Health, Eaton, Genstar Capital

      Health CareHospitalsEmail
    4. 4
      Keisuke TatsuokaGeneral Partner at N/A
      92 portfolio investments

      Notable investments: Synamon, Realeyes, kikitori, Railsbank

      CybersecuritySemiconductorTask Management
    5. 5
      Tasuke NakagawaPartner at N/A
      92 portfolio investments

      Notable investments: Synamon, Realeyes, kikitori, Railsbank

      CybersecuritySemiconductorTask Management
    6. 6
      Ayu ShinoyamaCFO at N/A
      92 portfolio investments

      Notable investments: Synamon, Realeyes, kikitori, Railsbank

      CybersecuritySemiconductorTask Management
    7. 7
      Yasuhiko YurimotoCEO at N/A
      92 portfolio investments

      Notable investments: Synamon, Realeyes, kikitori, Railsbank

      CybersecuritySemiconductorTask Management
    8. 8
      Kazuhiko MiyamaPartner at N/A
      92 portfolio investments

      Notable investments: Synamon, Realeyes, kikitori, Railsbank

      CybersecuritySemiconductorTask Management
    9. 9
      Jiro KumakuraGeneral Partner at N/A
      92 portfolio investments

      Notable investments: Synamon, Realeyes, kikitori, Railsbank

      CybersecuritySemiconductorTask Management
    10. 10
      Isao YasudaGeneral Partner at N/A
      92 portfolio investments

      Notable investments: Synamon, Realeyes, kikitori, Railsbank

      CybersecuritySemiconductorTask Management
    11. 11
      Ryo UmezawaDirector at N/A
      90 portfolio investments

      Notable investments: Cumi, Meetscare, Asumsi, Stock

      E-commerceCybersecurityConsumer Goods
    12. 12
      Taiga MatsuyamaPartner at N/A
      90 portfolio investments

      Notable investments: Cumi, Meetscare, Asumsi, Stock

      E-commerceConsumer GoodsHR Tech
    13. 13
      David MilsteinManaging Partner, Japan Head at N/A
      86 portfolio investments

      Notable investments: PharmEasy, Shadowfax, Mention Me, Toast

      DiningHealth CareCommercial
    14. 14
      Junichi MurataPartner at N/A
      86 portfolio investments

      Notable investments: PharmEasy, Shadowfax, Mention Me, Toast

      DiningHealth CareCommercial
    15. 15
      Shinichiro (Sheen) KomotoPartner at N/A
      86 portfolio investments

      Notable investments: PharmEasy, Shadowfax, Mention Me, Toast

      DiningHealth CareCommercial

    Methodology

    Investors are ranked by the number of disclosed portfolio investments recorded in the AngelBacked database of Tokyo-based angels, VCs, and family offices. Rankings refresh as new investments are disclosed. Portfolio counts reflect publicly known deals and may understate an investor's full activity.

    Frequently Asked Questions

    Who is the most active angel investor in Tokyo?

    Based on disclosed portfolio investments, Reinier Mikami (N/A) is the most active angel investor in Tokyo in our database, with 96 portfolio investments.

    How many angel investors are in Tokyo?

    AngelBacked's database includes 270 angel investors and VCs based in Tokyo. This page ranks the 15 most active by portfolio size.

    What sectors do Tokyo angel investors fund?

    The most common sectors among Tokyo's top angel investors are Information Technology (IT), Cybersecurity, Semiconductor, Task Management and Food Processing.

    How do I contact angel investors in Tokyo?

    Each investor profile on AngelBacked includes verified contact details, portfolio companies, and sector focus. Warm introductions convert best, but a concise cold email referencing a relevant portfolio company also works — mention why your startup fits their investment pattern.

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    Browse All 270 Tokyo Investors

    Filter by sector, stage, and check size — with verified contact details.

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