| Official Name: | Ljanik |
| Native Name Lang: | sr |
| Settlement Type: | Village (Selo) |
| Pushpin Map: | Serbia |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Name: |  Serbia |
| Subdivision Type1: | District |
| Subdivision Name1: | Pčinja District |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Preševo |
| Unit Pref: | Metric |
| Area Footnotes: | [1] |
| Area Total Km2: | 5.33 |
| Population As Of: | 2002 |
| Population Total: | 29 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 42.3131°N 21.8181°W |
Ljanik (Serbian: Љаник) is a village located in the municipality of Preševo, Serbia. According to the 2002 census, the village has a population of 29 people, all ethnic Serbs.[2] The toponym is derived from ljanik, a variant of the word pčelinjak ("apiary").[3] [4] The village was known for its beehives and hence got its name.[5] There are two neighbourhoods (mahale), called Selo and Rosulja. It is located at the slopes of the Rujan mountain.
The village is one out of four with Serb majority in the Preševo municipality, along with Svinjište, Slavujevac and Cakanovac; the rest having an Albanian majority.