Ten'en (天延) was aJapanese era (年号,nengō; "year name") afterTenroku and beforeJōgen. This period spanned the years from December 973 through July 976.[1] The reigning emperor wasEn'yū-tennō (円融天皇).[2]
| Preceded by | Era ornengō Ten'en 973–976 | Succeeded by |