Slieve Muck

Infobox Mountain
Name = Slieve Muck - Sliabh Muc
Photo =
Caption =
Elevation = 674 m
Location = County Down, Northern Ireland
Range = Mourne Mountains
Prominence = 350 m
Topographic
OSNI "Landranger" 29, OSNI Outdoor Pursuits map "Mourne Country"
Grid_ref_Ireland = J282250
Listing = Marilyn, Hewitt

Slieve Muck ("Sliabh Muc" in Irish) is a mountain located in the Mourne Mountains which has a height of at 674 metres. The mountain is sometimes called "the mountain of the pigs". Its summit overlooks Spelga Dam and the Deer's Meadow, the source of the River Bann.