The Kyoto Municipal Subway , also known as Kyoto City Subway, is the rapid transit network in the city of Kyoto, Japan. Operated by the Kyoto Municipal Transportation Bureau, it has two lines.

Kyoto, officially Kyoto City , is the capital city of Kyoto Prefecture in the Kansai region of Japan's largest and most populous island of Honshu. As of 2020, the city had a population of 1.46 million, making it the ninth-most populous city in Japan. More than half (56.8%) of Kyoto Prefecture's population resides in the city. The city is the cultural anchor of the substantially larger Greater Kyoto, a metropolitan statistical area (MSA) home to a census-estimated 3.8 million people. It is also part of the even larger Keihanshin metropolitan area, along with Osaka and Kobe.