Brouwerij Klein Duimpje is a craft brewery based in Hillegom, in the Netherlands. Named after the Dutch fairy-tale character Tom Thumb (Klein Duimpje), the brewery has built a reputation as a destination for beer enthusiasts, with visitors describing it as a true craft beer heaven despite its unpretentious exterior. The brewery offers a diverse portfolio of craft beers spanning a wide range of styles. From (D)IPAs and India Pale Ales — such as their Zevenmijlslaarzen IPA at 7% — to rich Porters, Klein Duimpje covers the full spectrum of modern craft brewing. The brewery also produces gruit beers, a traditional style brewed with herbs rather than hops, which they celebrate on international Gruit Day. Notably, Klein Duimpje also offers a range of gluten-free beers, broadening their appeal to a wider audience. Brouwerij Klein Duimpje offers brewery tours and tasting sessions of approximately 90 minutes, making it a popular experiential destination. Their beers are available through an online webshop and have earned them a spot among the best breweries in the Netherlands according to Tripadvisor. The brewery has also been featured at international beer festivals, reflecting their growing reputation beyond Dutch borders.