The Siddar River, also known as the Siddarmark River, was a river of at least sixteen hundred miles in the Republic of Siddarmark. (map)

It that snaked through the final mountains of Glacierheart, then through the foothills of Shiloh Province, and into Old Province to the capital city of Siddar, which was located at the point where the Siddar flowed into North Bedard Bay. (AMF, HFAF)