| Sai Yok National Park | |
|---|---|
| อุทยานแห่งชาติไทรโยค | |
 Khwae Noi river in Sai Yok National Park | |
  Park location in Thailand | |
| Location | Kanchanaburi Province, Thailand |
| Nearest city | Kanchanaburi |
| Coordinates | 14°25′4″N 98°44′50″E / 14.41778°N 98.74722°E |
| Area | 500 km2 (190 sq mi) |
| Established | October 1980 |
| Visitors | 117,401 (in 2019) |
| Governing body | Department of National Parks, Wildlife and Plant Conservation |
Sai Yok National Park (Thai: อุทยานแห่งชาติไทรโยค) is a national park in Sai Yok district, Kanchanaburi Province, Thailand. The park, home to mountains, waterfalls and caves, is part of the Western Forest Complex protected area.