The St. Feuillien Brewery is a Belgian brewery in Le Roeulx, Belgium, which was founded in 1873. The brewery, which makes abbey-style beer, has been operated by the Friart family all this time, except for an 11-year hiatus that ended in 1998. Beers brewed by St. Feuillien include a brown ale and a tripel, the latter of which praised as one of the best tripels available. A recent addition to their selection is a saison, "which has grown steadily to be up with the best". In 2016, the brewery launched an IPA called Belgian Coast.
St. Feuillien introduced a Christmas beer in 1969, which by 2013 accounted for 8% of their total production.