| Location: | Reykjanes peninsula |
| Coordinates: | 63.8157°N -22.7042°W |
| Yearbuilt: | 1878 |
| Yearlit: | 1929 |
| Construction: | concrete tower |
| Shape: | tapered cylindrical tower with balcony and lantern |
| Marking: | white tower, red lantern room |
| Height: | 31m (102feet) |
| Focalheight: | 73m (240feet) |
| Characteristic: | Fl (2) W 30 s. |
| Country: | Iceland |
| Countrynumber: | VIT-001 |
Reykjanesviti (in Icelandic pronounced as /ˈreiːcaˌnɛːsˌvɪːtɪ/) is Iceland's oldest lighthouse, located at Reykjanestá. It serves as a landfall light for Reykjavík and Keflavík.
The tower is a tall construction, situated on the southwestern edge of the Reykjanes peninsula.[1] The original structure was built in 1878; just eight years later the building was destroyed by an earthquake. In 1929 the current Reykjanesviti lighthouse, a concrete construction yet with traditional looks, was illuminated. Its focal plane measures 73 metres above sea level.[1]
The light characteristic is "Fl (2) W 30 s.", i.e. a group of two flashing lights every 30 seconds. An antenna for the transmission of DGPS-signals in the longwave range is mounted on the rooftop.[1] There is also a two-story keeper's residence built in the modern area, and the lighthouse has a resident keeper.[1] The lighthouse is located near an area of thermal activity, and steam from this source is often seen in photographs of the lighthouse.[1]