Älvsbyn (Swedish pronunciation: [ˈɛ̌lvsbʏn]; translating to "the river village") is a locality and the seat of Älvsbyn Municipality in Norrbotten County, Sweden with 4,967 inhabitants in 2010. It is known as "The Pearl of Norrbotten".
Älvsbyn has a railway station that is served by trains running between Boden and Stockholm along the Swedish east coast. It has a youth hostel with a small recreational park, including a swimming pool.