The Halmstad-Nässjö railway line (Swedish: Järnvägslinjen Halmstad–Nässjö) is a Swedish railway line between Halmstad and Nässjö.

The railway is unelectrified in its entirety and only has a single track.

The track was originally built by the private consortium Halmstad-Jönköpings Järnvägsaktiebolag, but the company went bankrupt only three years after construction finished in 1882.

In the coming years the railway will be electrified between Nässjö and Värnamo.

[2] A report commissioned by the local government in Halland County completed in 2021 has proposed a closure of services from Halmstad to Jönköping and Värnamo which use the line today, alongside starting rail services to Hyltebruk, which currently only sees freight traffic.