Janské Lázně (German – Johannisbad) is a small spa town in the Hradec Králové Region of the Czech Republic. It has around 850 inhabitants. It is located in a mountainuous area 519 meters (1,703 feet) above sea level.
Local thermal spring was used as early as in the 15th century. During 1675 – 1680 a village was founded here by order of Johann Adolf, prince of Schwarzenberg. In 1881 it obtained township privileges.
The water bath runs at a natural temperature of 29.6 °C (85.3 °F). Besides the bath observation tower, another popular tourist attraction is a Neo-Renaissance colonnade.
The place is also known among winter sports athletes, including being host of the 1925 FIS Nordic World Ski Championships and 1937 Workers‘ Winter Olympiad.