Slieve Meelmore is one of the Mourne Mountains in County Down, Northern Ireland. It rises to 680 m (2230 ft) and is the seventh-highest of the Mournes. To its south is Slieve Meelbeg and to its east is Slieve Bearnagh. The Mourne Wall passes over its summit.
Slieve Meelmore is a popular hiking destination and is east of the village of Hilltown.
The mountain is mistakenly referred to as the seventh "Seven" in the annual Mourne Sevens challenge walk. This one-day event requires participating hillwalkers to visit all summits in the Mourne Mountains that are higher than . When the event was first organised in 1992, a published map for the area displayed a spot height of at the mountain's summit. In 2004, a participant discovered that the actual spot height is several metres below the required 700 m.