it become the Tha Chin River, named after the former name of Samut Sakhon. The name Tha Chin is the convention used in most scientific documents.

The name "Tha Chin" literally means "Chinese pier". More than a thousand years ago, the area where the river now flows, in what is today Samut Sakhon province, was home to a large Chinese community. Their descendants still live there today. For this reason, the area is also known in the Teochew dialect as "Leng Kia Chu" , which means "home of the descendants