| Official Name: | Nättraby |
| Pushpin Map: | Sweden Blekinge#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Karlskrona Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Blekinge County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Blekinge |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.77 |
| Population As Of: | 31 December 2010 |
| Population Total: | 3,109 |
| Population Density Km2: | 1123 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 56.2°N 46°W |
Nättraby is a locality situated in Karlskrona Municipality, Blekinge County, Sweden with 3,109 inhabitants in 2010. Within the parish 1km (01miles) to the west is the hamlet of Bjärby.
On 25 April 1895, a was opened between Nättraby and Alnaryd by the eponymous company based in Nättraby. This railway was extended north to Eringsboda on 1 July 1905. Another railway was opened from Eringsboda to Älmeboda on 21 December 1910 by a different company. Because the latter was in practice an extension of the one from Nättraby to Eringsboda, it merged along with its owner into the Nättraby–Eringsboda railway the following year.[2]