Jianyi may refer to:

Jianyi, Liaoning (建一), a town in Dashiqiao, Liaoning, China

Historical eras Jianyi (建義, 385–388), era name used by Qifu Guoren, ruler of Western Qin Jianyi (建義, 528), era name used by Emperor Xiaozhuang of Northern Wei

See also Jian Yi, Chinese filmmaker