Laško (German: Tüffer) is a spa town and municipality in eastern Slovenia. Traditionally the area was part of the Lower Styria region. The municipality is now included in the Savinja statistical region. The town is located at the foothills of the Hum hill on the Savinja River. It is first mentioned in written documents dating to 1227 and was granted town privileges in 1927. It is known to have been settled since the Iron Age and Roman archaeological finds are common in the area, though the precise location of the Roman settlement is not known. Today the town is best known as the town of beer and flowers and is famous for its annual Festival of Beer & Flowers (Pivo - Cvetje) and the local Laško Brewery, the largest brewery in the country. In 2010, Laško was heavily affected by the floods.

The town's coat of arms depicts three white fleurs-de-lis on a blue field.

The local castle, known as Tabor Castle, dates to the 12th century, though it is first mentioned in written sources dating to 1265. It was burnt down during Ottoman Raids in the late 15th century and was extended in the 16th century.