- JIGA
- JIGA Arquitectura
- Jill Porter Architect
- JILONG EUROPE
- Jim Caumeron Design
- Jim Dickens Fabrics
- Jima Design
- JIMENEZ DE NALDA
- Jiménez y Bazán Arquitectos S. L. P.
- Jimmie Martin Limited
- JIMTEN SA
- jingle design
- Jingu Phoenix Space Planning Organization
- Jinhua Dokio Technology Co., Ltd.
- JinJan
- Jinko Solar (DE)
- Jinko Solar Co. Ltd
- JiotiSolar
- Jippi Design