維新百年記念公園, Memorial park in Yamaguchi, Japan.

維新百年紀念公園, also known as Ishin Memorial Park, is a sports and recreation park in Yamaguchi, Japan, built around a main stadium and several auxiliary fields for different sports. A children's area and a cultural center are also part of the grounds, making it a place used for both sports events and leisure.

The park's main stadium was built in 1963 for a national sports event, and the wider park complex was officially opened in 1973 to mark the centennial of the Meiji Restoration. The Meiji Restoration was the political shift in the 19th century that ended feudal rule in Japan and brought the country into the modern era.

The open-air stage called Big Shell opened in August 1994 and seats 1,667 people, excluding the lawn area. It is equipped for both music and theatre. Large boards at five spots in the park carry concert notices and location maps, and temporary signboards are put up on performance days.

The park is within walking distance of Yahara Station and easy to reach by public transit. Since the grounds cover several distinct areas, it helps to check in advance whether a sports event or performance is scheduled, as this can affect access to certain parts.

The park's oldest facility is the athletics stadium, built in May 1963 for the 18th National Sports Festival held that October. It was rebuilt entirely for the 2011 National Sports Festival, and since January 2018 it has carried the name Ishin Miraifu Stadium, shortened to Mira-Sta, under a naming-rights deal with the Kurume firm Miraifu.