Herrljunga is a locality and the seat of Herrljunga Municipality, Västra Götaland County, Sweden. It had 3,822 inhabitants in 2010. The town grew up around a railway junction. From 1906 it had the status of a municipalsamhälle (a form of borough) within the rural municipality, also called Herrljunga. Today it is the seat of the much larger Herrljunga Municipality. Herrljunga is known for Herrljunga Cider, that as of 2005 has the largest market share of cider in daily stores with 16%.