- JESPEN S.R.O.
- Jesper Holm Design & Møbelsnedkeri
- Jesper Kusk Arkitekter
- Jess Design
- Jesse Bennett Architect
- JESSE ITALIA
- Jessica Helgerson Interior Design
- Jessop and Cook Architects
- Jestico + Whiles
- Jesurum srl
- jesus alvarado - architecture design
- Jesús Aparicio Estudio de Arquitectura
- Jesús Torres García Architects
- JET DE BRUIJN
- Jet Energy International
- JET SPURGO DI ROSSI LUIGINO
- Jetclass Real Furniture
- Jetion Solar (Europe) Ltd.
- JETRO Japan External Trade Organization