Nättraby is a locality situated in Karlskrona Municipality, Blekinge County, Sweden with 3,109 inhabitants in 2010. Within the parish 1 km to the west is the hamlet of Bjärby. On 25 April 1895, a Nättraby–Alnaryd–Elmeboda Railway 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.