库尔桑（法语：Coursan）是法国奥德省的一个市镇，属于纳博讷区（Narbonne）库尔桑县（Coursan）。该市镇2009年时的人口为6087人。

库尔桑人口变化图示

数据来源：INSEE

Coursan is a commune in the Aude department in southern France.

It is 7 km from Narbonne on the Aude. There is a bridge built in the fifteenth century, over which passes the RN9 road. The town has a church from the same period which is in the course of being restored.