Avantium N. V., a chemical technology company, provides catalysis services and systems to the oil, gas, chemical, and renewable industries in the Netherlands. The company operates through three segments: Avantium Catalysis, Avantium Renewable Chemistries, and Avantium Renewable Polymers.

The company offers furandicarboxylic acid, a building block for polyethylene furanoate (PEF); and PEF, a plant-based recyclable plastic for use as packaging material. It offers catalyst testing systems, including Flowrence XD that provides catalyst testing for the early discovery stage; Flowrence XR for research; Flowrence XP that provides testing of catalysts in the process development stage; and Flowrence XC that offers testing of catalysts in the commercialization stage, as well as provides R&D services and refinery catalyst testing services. The company also develops and commercializes products and processes in the renewable and chemistries space.

In addition, it develops ray technology to produce mono-ethylene glycol from industrial sugars; and dawn technology which converts non-food plant-based feedstock to industrial sugars and lignin. Avantium N. V. was founded in 2000 and is headquartered in Amsterdam, the Netherlands.