- J'sPRODUCE - ジェイズプロデュース公式
- J-WAVEアプリ
- Jaaap
- Jaanu
- JAB Condomínios
- JabMe - your free & easy XMPP messenger
- Jacapo
- Jacebook
- Jack and His Hippo Family
- Jack and Jill Inc.
- Jack Doodly
- Game Nights
- Jackpot Party - Casino Slots
- Jacks Patch
- Jackson Wild Collective
- Jack’d - Gay chat & dating
- Jacobikerk Utrecht
- Jacobus
- JAF Rewards
- Jamhouse
- Jami
- Jamia Masjid Noor
- JamiiForums
- Jamline
- Jams - Musician finder
- Jamselect
- JAM-アルバムシェア生活をはじめよう
- JANDI: Team Collaboration Tool
- Janmashtami Day Photo Frame
- Janosch: Tiger, Bear & Co.
- J&J Eventos
- Janym
- Japan Radio - Learn Japanese
- Japanese Food Stickers for iMessage
- Japanese Live
- Japap
- Jardin Stanford