Bedrift W - Porsgrunn
- Webrands AS
- Wera AS
- Wimp AS
- Weaim AS
- Webrodent AS
- Wald AS
- Westernbutikken AS
- Waterstop AS
- Walnum
- Woxen A/S
- Webteknologi AS
- Wolter Media
- Winje Agency AS
- Wolter Invest AS
- Webrands Midco AS
- Wergeland - Kurs
- Westli Consulting AS
- Wavesound Ungdomsbedrift
- Westby Consult
- Wimp Eiendom AS
- Wimp Invest AS
- Waahlberg Handel
- Wave Av AS
- Wergeland Grafisk AS
- Wg Plastsveis AS
- Wetherill Marine
- Weitkamp Servicetjenester
- Woxen Pusseropp
- Wennberg Anlegg
- Wirgenes Holding AS
- Western Choice AS
- Wenche Rånman Nornes
- Wright Trafikkskole AS Porsgrunn
- Wroldsen AS Alf S
- Westerlin Creative Studio
- Wiiliams Fitness.Com
- Weber Leca Porsgrunn
- Wilhelmsen Ships Service AS
- Wellalage Don Lege
- Willy Bamles Bilverksted AS
- Wild Horses V/Gulbrandsen
- Wahlstrøm Regnskap og Rådgivning AS
- W&W International Wenche Wennerød
- With Love By Solveig
- Wood Group Norway AS Avd Herøya
- Wild And Pretty Floral Design ved Linda Sorensen