| Slieve Muck | |
| Other Name: | Sliabh Muc |
| Elevation M: | 670.4 |
| Elevation Ref: | [1] |
| Prominence M: | 156 |
| Range: | Mourne Mountains |
| Listing: | Marilyn, Hewitt |
| Location: | County Down, Northern Ireland |
| Map: | Northern Ireland |
| Map Size: | 300 |
| Label Position: | right |
| Coordinates: | 54.158°N -6.0397°W |
| Grid Ref Ireland: | J282250 |
| Topo: | OSNI Landranger 29, OSNI Outdoor Pursuits map Mourne Country |
Slieve Muck (;) is one of the Mourne Mountains in County Down, Northern Ireland.[2] It has a height of . The River Bann has its source on the northern slope.[3] [4]
Slieve Muck has three summits which are composed of Silurian shale covering the underlying granite. The shale forms an escarpment near the eastern side of the summits. The western slope is grassy and has a number of small streams flowing into the Deer's Meadow below. The eastern slope below the escarpment is made up of stony scree with lighter coloured areas appearing to spell out POV when seen from a distance, local people have used their imagination to complete the word Poverty, which has led to the mountain also being referred to as Poverty Mountain.[5]