Calbha Mòr should not be confused with Calve Island.
| Location Map: | Scotland Sutherland |
| Coordinates: | 58.28°N -5.13°W |
| Gridreference: | NC167367 |
| Celtic Name: | Calbha Mòr |
| Meaning Of Name: | Large calf island[1] |
| Area: | 70 ha[2] |
| Area Rank: | 174= |
| Highest Elevation: | 67m (220feet) |
| Population: | Uninhabited |
| Island Group: | Islands of Sutherland |
| Local Authority: | Highland |
Calbha Mòr is a tidal islet in Eddrachillis Bay, Sutherland, Scotland.
Calbha Mòr lies north of the Kylesku Bridge and west of the Duartmore forest in a location that is relatively inaccessible from the A894 road. It is 70ha[2] in area and comprises two rounded hills, the higher of which reaches 67m (220feet).[2]
It is separated from its smaller neighbour, Calbha Beag, by a channel 11m (36feet) deep.[3] Calbha Beag is 45ha in area.[2]
The sheltered Bàgh Chalbha lies to the east[4] and a large escape of fish from a fish farm here took place in 2003.[5]