Marken in Duisburg
- Jack & Jones Mode (1)
- Jack Wolfskin (2)
- Jacques' Wein-Depot (2)
- JalouCity Heimtextilien (1)
- JD Sports Fashion (1)
- JEANS FRITZ Mode (1)
- JET-Tankstelle (5)
- Job AG (1)
- jobcenter Duisburg (8)
- Jochen Schweizer (1)
- JOHN REED Fitness (1)
- Juwelier Kraemer (1)
- Juwelier Rüschenbeck (1)
- JYSK (3)