Viernau
Ortsteil of Steinbach-Hallenberg
Coat of arms
Location of Viernau
Viernau Show map of Germany Viernau Show map of Thuringia
Coordinates: 50°39′59″N 10°33′13″E / 50.66639°N 10.55361°E / 50.66639; 10.55361
Country	Germany
State	Thuringia
District	Schmalkalden-Meiningen
Town	Steinbach-Hallenberg
Area
• Total	15.85 km2 (6.12 sq mi)
Elevation	400 m (1,300 ft)
Population  (2017-12-31)
• Total	1,926
• Density	120/km2 (310/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
Postal codes	98547
Dialling codes	036847
Vehicle registration	SM
Website	www.viernau.de

Viernau is a village and a former municipality in the district Schmalkalden-Meiningen, in Thuringia, Germany. Since 1 January 2019, it is part of the town Steinbach-Hallenberg.