Fumin-no-mori Hiyoshi, Public park in Nantan, Japan.

Fumin-no-mori Hiyoshi is a public park in Kyoto Prefecture featuring natural forest with multiple walking trails winding through dense trees and vegetation. The landscape changes throughout the seasons, offering different views and conditions for visitors.

The forest opened in April 2000, developed under the Hiyoshi Dam surrounding-area plan, which aimed to revitalise the area around the dam. In March 2016 it was included in the ordinary zone of the Kyoto Tamba Kogen Quasi-National Park, and on 9 October 2016 the 40th National Tree-Growing Festival was held here to mark that designation. From 1 April 2024 it has operated under the nickname "Hapi-ro! no Mori Kyoto" after Lawson signed a naming-rights contract on 25 March 2024.

The park opened in April 2000 as Fumin-no-mori Hiyoshi, and its official nickname has changed with naming-rights contracts: it was "STIHL no Mori Kyoto" from December 2013 to November 2021, and from 1 April 2024 it operates as "Hapi-ro! no Mori Kyoto" after Lawson signed the partnership. The Hiyoshi-cho Furusato Shiryokan local museum stands on the grounds.

The park lies in the Amanwaka area of Hiyoshi, Nantan, and is reached by taxi about 15 minutes from Sonobe Station on the San'in Line, or by bus from Hiyoshi Station to the Fumin-no-mori stop. The bus runs once a day in each direction, though on weekdays and Saturdays some services turn back at Hiyoshi Onsen, from where the park can be reached on foot. By car, leave the Kyoto Jukan Expressway at Sonobe IC and follow signs past Hiyoshi Bridge. Camping and lodging require booking at least one week ahead.

The park's 128-hectare grounds include a 7,000-square-metre dog run, open 9:00-16:30, where owners must show proof of rabies vaccination and a registration tag. The site also has a monorail that visitors can ride only during events, and a disc golf course affiliated with the Japan Disc Golf Association.