Kōchō (弘長) was a Japanese era name (年号, nengō, lit.

"year name") after Bun'ō and before Bun'ei.

This period spanned the years from February 1261 to February 1264.

[1] The reigning emperor was Kameyama-tennō (亀山天皇).

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