De Proefbrouwerij is a Flemish brewery founded in 1996 by Dirk Naudts and his wife Saskia Waerniers.

The brewery is located in the village of Lochristi, near Ghent.

They also operate a research and development department[2] focused on the science of brewing.

[3] The brewery releases its own brand of beers under the moniker "Reinaert", these include:[4] a flemish red ale (9%), an amber beer (7%), a tripel (9%), and a grand cru (9.5%).

The brewery operates predominantly as a rental brewery, and provide the brewing facilities to many gypsy breweries who do not have their own facilities, or who want to produce experimental small batch beers.