Smalspårsjärnvägen Växjö–Västervik, Heritage railway in Hultsfred Municipality, Sweden.

Smalspårsjärnvägen is a narrow-gauge railway that runs roughly 70 kilometers through forests, farmland, and small settlements connecting Hultsfred and Västervik in eastern Småland. The line features dozens of small stations positioned throughout the journey and passes several lakes along its route.

The two lines were built by separate companies: Hultsfred–Västervik opened in 1879, while Växjö–Hultsfred was completed in stages between 1895 and 1922. Both were nationalised, in 1941 and 1949, and from 1972 formed SJ's last narrow-gauge line with passenger traffic. Passenger service ended on 19 August 1984 and freight in 1986; the VHVJ company then ran tourist trains until its 1992 bankruptcy.

The heritage line is run by volunteers: the Tjustbygdens Järnvägsförening operates the old Hultsfred–Västervik railway, while Föreningen Smalspåret Växjö–Västervik and its subsidiary Smalspåret i Hultsfred AB look after the Åseda–Hultsfred section. On the Hultsfred–Virserum stretch visitors pedal railbikes along the 891 mm track, and trains ran to Virserum during the Olsmässan fair in Åseda and Virserum market until 2019.

The heritage line runs between Hultsfred and Västervik; the Åseda–Växjö section of the old Växjö line has been lifted, while rails remain between Åseda and Hultsfred, where railbike cycling is offered on part of the route. Since 2020 no trains run between Åseda and Virserum, so check which section is operating before setting out.

The two halves had separate origins: the Hultsfred–Västervik line was inaugurated in 1879 by HWJ, while the Växjö–Hultsfred line was built in stages from 1895 to 1922 by VÅHJ. They were only run as one through line from 1972 until passenger traffic ceased on 19 August 1984.