Jianyuan

Jianyuan may refer to:


 * Remonstrance Bureau, a government agency during the Song and Jurchen Jin dynasties

Historical eras

 * Jianyuan (140BC–135BC), era name used by Emperor Wu of Han
 * Jianyuan (315–316), era name used by Liu Cong (Han-Zhao), emperor of Former Zhao
 * Jianyuan (343–344), era name used by Emperor Kang of Jin
 * Jianyuan (365–385), era name used by Fu Jian (337–385), emperor of Former Qin
 * Jianyuan (479–482), era name used by Emperor Gao of Southern Qi