| Mattstock | |
| Other Name: | Mattstogg |
| Elevation M: | 1936 |
| Prominence M: | 358 |
| Parent Peak: | Speer |
| Prominence Ref: | [1] |
| Map: | Switzerland |
| Location: | St. Gallen, Switzerland |
| Range: | Appenzell Alps |
| Coordinates: | 47.1697°N 9.1357°W |
The Mattstock (also known as Mattstogg) (1,936 m) is a mountain of the Appenzell Alps, overlooking the Walensee in the canton of St. Gallen. It lies south of the Speer, on the range between the Toggenburg and the Linth valley.