- Yenzel GmbH in Liq.
- Basel
- BS
- Yesilyayla
- Basel
- BS
- Yellow-Prom, M. Hägeli
- Sierenzerstrasse 21
- Basel
- BS
- Yesilyayla Transport
- Waldighoferstrasse 20
- Basel
- BS
- YEP Vakuum Schweiz GmbH
- Gartenstrasse 101
- Basel
- BS
- Yer Import
- Rixheimerstrasse 12
- Basel
- BS
- YES - Youth Education Service in Liquidation
- Rümelinbachweg 21
- Basel
- BS
- Yeganeh-Afchar
- Weidengasse 19
- Basel
- BS
- yellow z urbanism architecture AG
- Oetlingerstrasse 173
- Basel
- BS
- Yesilyayla Sefike Musical Bar
- Riehenring 173
- Basel
- BS
- Yeschil Transport Yesilyayla
- Kaysersbergerstrasse 35
- Basel
- BS
- Yehuda Kuperman
- Byfangweg 5
- Basel
- BS
- Yellow Werbeagentur AG
- Horburgstrasse 105
- Basel
- BS
- Yemda GmbH in Liquidation
- Untere Rebgasse 31
- Basel
- BS
- Yemane Klybeck Shop
- Klybeckstrasse 40
- Basel
- BS
- YellowByte GmbH in Liquidation
- Tiefweg 34
- Riehen
- BS
- Yellow Box Game GmbH
- Frobenstrasse 27
- Basel
- BS
- Yellow Wine Adventures GmbH
- Malzgasse 7a
- Basel
- BS
- Yesilyayla Kutdüsü
- Kaysersbergerstr. 35
- Basel
- BS
- Yerewines GmbH
- Horburgstr. 6
- Basel
- BS
- Yelken GmbH
- Zwingerstrasse 31
- Basel
- BS
- Yendis AG
- St. Alban-Vorstadt 104
- Basel
- BS
- Yecosa GmbH
- Untere Rebgasse 31
- Basel
- BS
- Yelögrü Trading
- Felsplattenstrasse 39
- Basel
- BS