Sakae Sun City Building, Office building and skyscraper in Sakae district, Nagoya, Japan

Sakae Sun City Building is a high-rise in Sakae, Naka Ward, Nagoya, jointly redeveloped by Naka Ward Office and Asahi Mutual Life Insurance. Its lower floors house the ward office, upper floors private offices, and the basement a restaurant arcade. It also contains the Nagoya Citizens Gallery Sakae, and a public artwork by Kiyonobu Shimizu, "Shu Kojō Yō", stands on the site.

The building was developed jointly by the Nagoya Naka Ward Office and Asahi Mutual Life Insurance on a site both owned, and was completed as Nagoya's first full-scale public-private composite building: ward office on the lower floors, private offices above, restaurants in the basement. From the start it used a district heating and cooling system shared with the neighbouring Chubu Nippon Building and a nearby restaurant.

The building houses the Nagoya Citizens' Gallery Sakae, a public exhibition space on the lower floors where various exhibitions are held, alongside the Nagoya Naka Ward Office. Its basement food street serves office workers and visitors in the block. The name Sun City refers to the joint redevelopment by the ward office and Asahi Mutual Life Insurance.

The nearest station is Sakae on the Nagoya Municipal Subway Higashiyama and Meijo lines. The Nagoya City Naka Ward Office occupies the lower floors, the Nagoya Citizens Gallery Sakae the upper public floors, and the basement level holds restaurants. The building also houses the Nagoya Sakae 4 Post Office, which moved into the rebuilt Chubu Nippon Building in March 2024.

The building's lower floors house Nagoya's Naka Ward Office, while the upper floors are private offices and the basement holds a restaurant arcade. It was the city's first full-scale public-private joint complex. A public art piece by Kiyobee Shimizu, "Shu Byoko", stands on the site.