The Takamatsu Domain was a feudal domain in Japan during the Edo period, located in what is now Kagawa Prefecture. It was ruled by the Matsudaira clan, a branch of the powerful Tokugawa family. The domain was established in the early 17th century and played a significant role in regional politics and economy. The capital of the Takamatsu Domain was the city of Takamatsu, which featured a castle built by the Matsudaira clan. The domain was known for its agricultural production, particularly rice, and its strategic location along the Seto Inland Sea, facilitating trade and communication with other regions.