South Mountain (New York)
{{short description|Mountain in New York State, USA}}
{{About|the mountain in Greene County near Haines Falls|other mountains in New York|South Mountain (disambiguation){{!}}South Mountain}}
{{Use mdy dates|date=January 2025}}
{{Infobox mountain
| name = South Mountain
| photo = 2012 July 06 North-South Lake from Sunset Rocks.jpg
| photo_caption = North-South Lake with South Mountain behind it, in the far back on the right is Roundtop Mountain and the left is High Peak.
| elevation_ft = 2467
| prominence_ft =
| prominence_ref=
| listing =
| location = E of Haines Falls, New York, U.S.
| range =
| coordinates = {{coord|42|11|21|N|74|03|06|W|type:mountain_region:US-NY_scale:100000_source:GNIS|format=dms|display=inline,title}}
| range_coordinates =
| coordinates_ref = {{cite gnis
| id = 965818
| name = South Mountain
| accessdate = 2018-01-12 }}
| topo = USGS Kaaterskill Clove
| map = New York#USA
| map_caption = Location of South Mountain within New York
| type =
| age =
| first_ascent =
| easiest_route =
}}
South Mountain is a mountain located in Greene County, New York east of Haines Falls, New York. Located to the southwest is Roundtop Mountain. High Peak drains south into Kaaterskill Creek and north into North-South Lake.