Tenna (in the local dialect: [tɛnːə] or [tɛnæ]) was until 31 December 2012 a municipality in the district of Safien Surselva in the Swiss canton of Graubünden. It is located on a sunny plateau in Safiental at 1654 m above sea level. On January 1, 2013, she merged with the communities Valendas, Versam and Safien to the new community Safiental.