Saigōyama Park, Urban park in Aobadai, Japan.

Saigōyama Park is a green space in Tokyo with walking paths and grass areas where visitors can sit and relax. On clear days, it offers views over the Nakameguro district and Mount Fuji in the distance.

The site was part of the Okabe-Nakagawa clan's Edo-period estate, later bought by Saigō Tsugumichi, brother of Takamori, as a villa. A French engineer named Lescasse designed its Western-style house, which was moved to Meiji Mura in 1963. The Saigō family left in 1941, and the park opened on 28 May 1981.

The name Saigōyama comes from Saigō Tsugumichi, Takamori's younger brother, who bought land here hoping for his brother's return; the area kept his name. The park has appeared as a filming location, including in the drama Tokyo Love Story, and its lawn and pond are used for rest and picnics.

The park is a 13-minute walk from Daikanyama Station on the Tokyu Toyoko Line, and its eastern edge borders the old Yamate-dori street. Tokyu Transes buses on the Daikanyama loop from Shibuya Station stop at Hachiyama-cho Koban and Saigobashi, a few minutes away. There is no parking, and filming or photo shoots require a paid permit from the park office.

The park's name comes from Saigō Tsugumichi, Takamori's younger brother, who bought land here hoping for his brother's return; the surrounding area was already known as Saigōyama. The wooded slope later became the dumping site in the 1932–33 Meguro baby-farming murders. The Western-style house designed by the French engineer Lescasse was moved to Meiji Mura in 1963 and is now a National Important Cultural Property.