Genkyū-en, Daimyo garden at Hikone Castle, Japan

Genkyū-en is a daimyo garden next to Hikone Castle that features a central pond connected by nine bridges to small islands, waterfalls, and a traditional tea house called Hakkitei. The grounds spread across several levels with carefully planted trees and shrubs that frame views of the pond and surrounding hills.

The garden's original form was laid out in 1678 by Ii Naooki, the fourth lord of Hikone. In 1813 it was redeveloped as a retirement residence for the eleventh lord, Ii Naonaka, taking on its present shape. The adjacent Raku-raku-en was completed in 1679, and the two were later jointly designated a Place of Scenic Beauty in 1951.

The name Genkyū-en refers to the Tang emperor Xuanzong's detached palace garden, and the pond and its viewpoints are modelled on the Eight Views of Ōmi. The pond-side pavilion is therefore called Hakkitei, the "Eight Views Pavilion". Each September the garden holds a concert for listening to insect song, with the grounds lit up for the evening.

Genkyū-en lies in the second enclosure northeast of Hikone Castle's inner moat, about 15 minutes on foot from JR Hikone Station; paid parking is available at the castle. The garden is open from 8:30 to 17:00 and does not close on any day. In November it is lit up at night, and the pond-side paths and bridges are the first things to reach from the entrance.

The garden's name comes from the Tang emperor Xuanzong's detached palace garden, and its borrowed scenery is matched to the Eight Views of Ōmi, with the pond-side pavilion named Hakkeitei after them. In 2024 the Hikone tourist association revived the boating custom of the former lords, who entertained guests on two roofed pleasure boats on the pond.