Kasumigaura Fureai Land, Recreational park in Namegata, Japan.

Kasumigaura Fureai Land is a family park in Namegata, Japan, set along the shore of Lake Kasumigaura. It has a tall observation tower, outdoor water play areas, and an animal section where visitors can see and interact with several species.

Kasumigaura Fureai Land opened as a leisure facility of Namegata city inside the third-class special zone of Suigo-Tsukuba Quasi-National Park. Its animal house, Kasumigaura Dobutsu to Minna no Ie, opened on 31 July 2024 in the rebuilt former Water Science Museum of the Water Resources Agency, which had closed on 31 March 2020. The on-site restaurant, first opened as Tamagyoen, reopened as Restaurant Mizumaru on 20 July 2013 and has since closed.

The park's mascot is Mizumaru-kun, a character tied to the site's water theme. The grounds also appeared on screen: in 1992 comedian Duncan bungee-jumped from the Rainbow Tower for a Nippon TV quiz show, and the tower later stood in as the "Hinera Tower" in the series Denji Sentai Megaranger.

The park has a parking area and can be reached by bus from nearby stations on the JR Joban Line. Comfortable clothing and shoes that can get wet are a good idea, especially if children plan to use the water play areas.

The park's symbol, the 64-metre Rainbow Tower, has a 51.2-metre observation deck. It appeared as the "Hinerar Tower" in the TV series Denji Sentai Megaranger, and in 1992 comedian Duncan bungee-jumped from it for Takeshi Kitano's comedy quiz show.