What is "tenna"

was a after Enpō and before Jōkyō. This period spanned the years from September 1681 through February 1684. The reigning emperor was .

Tenna can refer to:

• Tenna (天和), a Japanese era name for a period spanning the years from 1681 through 1684
• Tenna (Switzerland)
• Tenna, a municipality in Trentino, Italy
• Tenna (river), a river in Marche, Italy, flowing into the Adriatic Sea

The Tenna is a river in the Marche region of Italy. Its source is in the Sibillini Mountains in the province of Fermo near the border with the province of Macerata. It flows northeast through the mountains near Montefortino and Amandola before forming the border between the provinces of Fermo and Macerata. The river enters the province of Fermo near Servigliano and continues flowing northeast past Grottazzolina and Montegiorgio. Finally, the river enters the Adriatic Sea near Sant'Elpidio a Mare and Porto Sant'Elpidio.