Slemen
{{Short description|Mountain in Serbia}}
{{Infobox mountain
| name = Slemen
| photo = Slemen mountain.jpg
| photo_caption = Slemen mountain seen from Tupiznica mountain.
| elevation_m = 1099
| map = Serbia
| map_caption = Location in Serbia
| map_size = 250
| location = Eastern Serbia
| range =
| coordinates = {{coord|43|41|23|N|22|03|17|E|type:mountain_scale:100000|format=dms|display=inline,title}}
| coordinates_ref =
| type =
| first_ascent =
| easiest_route =
}}
Slemen (Serbian Cyrillic: Слемен) is a mountain in eastern Serbia, near the town of Knjaževac. Its highest peak has an elevation of 1,099 meters above sea level.