Kenji (建治) is a Japanese era name (年号, nengō, lit.

"year name") which followed Bun'ei and preceded Kōan.

This period spanned the years from April 1275 to February 1278.

[1] The reigning emperor was Go-Uda-tennō (後宇多天皇).

[2] This article about a Japanese era name is a stub.