| Gross Seehorn | |
| Elevation M: | 3122 |
| Prominence M: | 434 |
| Prominence Ref: | [1] |
| Parent Peak: | Piz Linard |
| Location: | Vorarlberg, Austria Graubünden, Switzerland |
| Range: | Silvretta Alps |
| Map: | Alps |
| Label Position: | left |
| Coordinates: | 46.8882°N 10.0321°W |
| Listing: | Alpine mountains above 3000 m |
The Gross Seehorn (also spelled Großes Seehorn in German) is a mountain of the Silvretta Alps, located on the border between Austria and Switzerland.
The Gross Seehorn is the westernmost mountain rising above 3,000 metres in Austria.