Lake Shi () or Shihu Lake, literally Stone Lake, is a fresh water lake located in the southeast of Suzhou, Jiangsu Province. It is closed to Shangfang Mountain, which is a national forest park of China, and it is about 4.5 kilometers away from the urban area of Suzhou. The most famous spot of it is Lake Shi String of Moons () in August 17 of the Chinese calendar, when nine reflections of the moon appear in a line. Lake Shi was a bay of the Lake Tai in ancient times.