Google Gemini: Here is a list of 20 of the most prominent and major companies based in or heavily rooted in Friesland. This list covers key sectors of the Frisian economy, including dairy/agrifood, industrial manufacturing, construction, logistics, consumer goods, and healthcare:

Dairy & Agrifood
- Royal FrieslandCampina (HQ / Roots: Leeuwarden / Amersfoort) — A global dairy giant originating from Frisian dairy co-operatives (e.g., CCF in Leeuwarden). Wikipedia
- Royal A-ware (Heerenveen) — A major dairy processor and logistics company specializing in cheese production, ripening, and packaging. CompanyData
- FBTO / Achmea (Leeuwarden) — Major insurance provider historically and structurally anchored in Leeuwarden (Avero Tower / Achmea Campus).
- Fonterra Europe Manufacturing (Heerenveen) — Key European manufacturing hub for dairy ingredients and whey products.
- CSK Food Enrichment (Leeuwarden) — Leading specialist in dairy cultures, enzymes, and food ingredients.
Manufacturing, Technology & Packaging
- Accell Group (Heerenveen) — Leading European bicycle manufacturer behind brands like Batavus, Koga, and Raleigh. Wikipedia
- BD (Becton Dickinson) / VitalMed (Drachten) — Major international medical technology and pharmaceutical device manufacturing plant.
- Philips (Drachten) — One of Philips‘ largest global innovation hubs and production plants for male grooming and personal care products.
- Tetra Pak Cheese and Powder Systems (Heerenveen) — Global leader in engineering equipment for dairy and cheese processing.
- Kwant Controls (Sneek) — Specialist manufacturer of nautical engine control systems and vessel instrumentation.
- Lankhorst Engineered Products / Euronete (Sneek) — Global developer of heavy-duty synthetic ropes, maritime mooring, and recycled plastic infrastructure.
Construction & Infrastructure
- Van Wijnen (Heerenveen) — Major national Dutch construction, project development, and industrial housing group.
- Friso Bouwgroep (Sneek / Leeuwarden) — Large regional construction and civil engineering conglomerate. CompanyData
- Bouwgroep Dijkstra Draisma (Dokkum / Bolsward) — Prominent Frisian contractor focusing on sustainable building and energy transition engineering.
- Jorrit Smink / Smink Vastgoed & Infra (Súdwest-Fryslân) — Major regional infrastructure and contracting works.
Logistics, Retail & Services
- AB Texel (Heerenveen) — Specialist transport and logistics company focused on agricultural and food supply chains.
- Poiesz Supermarkten (Sneek) — The premier independent supermarket chain native to the Northern Netherlands, headquartered in Sneek.
- Douma Staal (Sneek) — Major steel stockholder and distributor operating across Northern Europe.
- Gebr. Sikma (Sneek) — Regional wholesale and distribution group serving agriculture and technical supplies.
Healthcare & Social Care Institutions (Largest Employers)
- Stichting Alliade (Heerenveen) — One of the largest healthcare and disability care networks in Friesland.