Siófok is a town in Somogy County, Hungary on the southern bank of Lake Balaton. It is the second largest municipality in Somogy County and the seat of Siófok District. It covers an area of about 124.66 km² between Lake Balaton, the Mezőföld and the Outer Somogy-Hills. Lying at the firth of the Sió Channel, it serves as the most important logistic station for goods between Lake Balaton and the River Danube.