| Trebesing | |
| Pushpin Map: | Austria |
| Pushpin Mapsize: | 270 |
| Pushpin Map Caption: | Location within Austria |
| Coordinates: | 46.8833°N 44°W |
| Subdivision Type: | Country |
| Subdivision Name: | Austria |
| Subdivision Type1: | State |
| Subdivision Name1: | Carinthia |
| Subdivision Type2: | District |
| Subdivision Name2: | Spittal an der Drau |
| Parts Style: | para |
| Leader Title: | Mayor |
| Leader Name: | Dipl.-Ing. Christian Genshofer |
| Elevation M: | 735 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 9852 |
| Area Code Type: | Area code |
| Area Code: | 04732 |
| Website: | www.trebesing.at |
Trebesing is a town in the district of Spittal an der Drau in the Austrian state of Carinthia.
Trebesing lies within the valley of the Lieser river in upper Carinthia not far from the national park of the Hohe Tauern about 12 km north of Spittal an der Drau. The municipality stretches from the Lieser west to the foothills of the Hohe Tauern with the Reißeck (el. 2985 m) as its highest point.