| Siyuan Pass | |
|---|---|
Looking north toward Siyuan Pass | |
| Elevation | 1,948 m (6,391 ft) |
| Traversed by | |
| Location | |
| Location | Datong, Yilan, Taiwan |
| Range | Central Mountain Range |
| Coordinates | 24°23′48″N 121°21′24″E / 24.396734°N 121.356597°E |
Siyuan Pass (Chinese: 思源埡口; pinyin: Sīyuán Wùkǒu, el. 1,948 m), formerly known as Piyanan Saddle (匹亞南鞍部), is a mountain pass in Datong Township, Yilan County, Taiwan. It is located along Provincial Highway 7A near the border of Taichung City.