Bedrift Z - Horten
- Zimmertech AS
- Zeal ANS
- Zedos AS
- Zakrisson Tak
- Zp Sleipner AS
- Zp Vale AS
- Zp Group AS
- Zp Eagle AS
- Zoran Pazanin
- Zavanna Sjøsiden
- Zen Eiendom AS
- Ziot Solutions AS Konkursbo
- Ziot Solutions AS Konkursbo
- Zimmer & Peacock AS
- Zenitel Norway AS Avd Horten
- Ziro Friction Innovation AS
- Zibifix, Zbigniew Krzysztof Przybylski
- Ziethén Sofia Sandra Linnéa
- Zaklad Remontowo Budowlany Lego Stawomir Graczyk
- Zenitel Mediterranean D. O. O. - Branch Office Horten NUF