| Knockalongy | |
| Other Name: | Cnoc na Loinge |
| Photo Size: | 280 |
| Elevation M: | 544 |
| Elevation Ref: | [1] [2] |
| Prominence M: | 490 |
| Listing: | Marilyn |
| Translation: | hill of the encampment |
| Language: | Irish |
| Location: | County Sligo, Ireland |
| Map: | Ireland |
| Label Position: | right |
| Map Size: | 240 |
| Range: | Ox Mountains |
| Coordinates: | 54.1942°N -8.7602°W |
| Grid Ref Ireland: | G504275 |
Knockalongy [3] is a 544m (1,785feet) Marilyn in County Sligo, Ireland. It is the highest of the Ox Mountains.[1] The nearest village is Skreen.[4]
There are many megalithic tombs on the plain between Knockalongy and Sligo Bay to the north. There are also two small loughs at the foot of the mountain—Lough Aghree and Lough Minnaun.[4]