| Sakunothayan Botanical Garden | |
| Native Name: | สวนพฤกษศาสตร์สกุโณทยาน |
| Type: | Botanical garden and Urban forest |
| Location: | Wang Thong, Phitsanulok, Thailand |
| Coordinates: | 16.8417°N 100.5314°W |
| Area: | 1.3km2 |
| Created: | 1955 |
| Operator: | Forest and Plant Conservation Research Office |
Sakunothayan Botanical Garden (Thai: สวนพฤกษศาสตร์สกุโณทยาน) is an botanical garden in Wang Thong District, Phitsanulok Province, northern Thailand. The park, at kilometer 33 of Phitsanulok-Lomsak Road, has 164 species of plants.
In 1955 "Wang Nok Aen Forest park" was established, with a total area of approximately . Royal Forest Department has changed its name to "Sakunothayan Forst Park" in 1958 and to "Sakunothayan Arboretum" in 1961.
On 4 February 2018 Department of National Parks, Wildlife and Plant Conservation upgraded it to "Sakunothayan Botanical Garden".
Wang Nok Aen or Sakunothayan Waterfall, within the arboretum, is a 10m (30feet) elevation drop of the Wang Thong River.