Borgholm (Swedish: [ˈbɔ̂rjhɔlm]) is a city and the seat of Borgholm Municipality, Kalmar County, Sweden with 4,401 inhabitants in 2020. It is located on the island of Öland in the Baltic Sea, at the Kalmar Strait-side of Öland, north of Färjestaden.
Borgholm is one of Sweden's historical towns with a former city status (stad). The city is best known for its once-magnificent fortress – Borgholm Castle – which is now in ruins. Borgholm is, despite its small population, for historical reasons normally still referred to as a city. Statistics Sweden, however, only counts localities with more than 10,000 inhabitants as cities.
Borgholm is the main city of Öland, but remains one of the smallest cities in Sweden.