Ibaraki Flower Park, Flower park in Ishioka, Japan.

Ibaraki Flower Park is a garden park in Ishioka, Ibaraki Prefecture, Japan, centered around a large collection of roses organized by color, fragrance, and theme. The grounds also include shops, dining areas, and seating spread across the different sections of the park.

The park opened in 1985, during a period when botanical exhibitions and horticultural education were gaining ground across eastern Japan. It was established with the specific aim of promoting flower culture in Ibaraki Prefecture.

Roses are Ibaraki Prefecture's official flower, and the park holds 800 varieties and 30,000 plants, the largest rose garden in eastern Japan. The Flower Dome hosts weddings among the roses; the first couple married there on 26 May 2013. In spring, about 250 Kawazu cherry trees cover the hill of the Fureai Forest.

By car, the park is about 20 minutes from Chiyoda-Ishioka or Ishioka-Omitama smart interchange, 15 minutes from Tsuchiura-Kita, and 25 minutes from Kasama-Nishi. From Ishioka Station, a taxi takes about 20 minutes; the Kanto Railway sightseeing bus runs about 30 minutes but only on weekends and holidays. A 1.2 km park shuttle runs one way to the observation deck in 15 minutes.

The park's nickname changed to "Ibaraki Flower Park" when it reopened on 29 April 2021 after renovation work that had closed it since 22 June 2020. A circuit vehicle runs the roughly 1.2 km from the entrance to the observation platform in Fureai no Mori in about 15 minutes, letting riders view the flowers along the route from their seats.