| Ljósá | |
| Settlement Type: | Village |
| Pushpin Map: | Faroe Islands |
| Pushpin Label Position: | left |
| Pushpin Mapsize: | 250 |
| Pushpin Map Caption: | Location in the Faroe Islands |
| Subdivision Type: | State |
| Subdivision Name: | Denmark |
| Subdivision Type1: | Constituent country |
| Subdivision Name1: | Faroe Islands |
| Subdivision Type2: | Region |
| Subdivision Name2: | Eysturoy |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Eiði |
| Unit Pref: | Imperial |
| Population As Of: | 2021 |
| Population Footnotes: | [1] |
| Population Total: | 36 |
| Timezone: | WET |
| Utc Offset: | ±00:00 |
| Timezone Dst: | WEST |
| Utc Offset Dst: | +01:00 |
| Postal Code Type: | Postal code |
| Postal Code: | 466 |
| Blank Name: | Climate |
| Blank Info: | Cfc |
Ljósá (Danish: Lyså) is a village located on Eysturoy in the Faroe Islands, in Eiði Municipality. It is located 4 km south of Eiði and 4 km north of Svínáir.
The village was founded around 1840.[2]