The krona (plural: kronor; sign: kr; code: SEK) has been the currency of Sweden since 1873. Both the ISO code "SEK" and currency sign "kr" are in common use; the former precedes or follows the value, the latter usually follows it, but especially in the past, it sometimes preceded the value. The currency is sometimes referred to as the "Swedish crown" in English (since krona literally means crown in Swedish). The Swedish krona also circulates in the Åland Islands alongside the official Finnish currency, the euro.

One krona is subdivided into 100 öre (singular and plural; when referring to the currency unit itself, however, the plural is ören). However, all öre coins have been discontinued as of 30 September 2010. Goods can still be priced in öre, but all sums are rounded to the nearest krona when paying with cash.

The introduction of the krona, which replaced at par the riksdaler, was a result of the Scandinavian Monetary Union, which came into effect in 1873 and lasted until World War I. The parties to the union were the Scandinavian countries, where the name was krona in Sweden and krone in Denmark and Norway, which in English literally means "crown". The three currencies were on the gold standard, with the krona/krone defined as ¹⁄₂₄₈₀ of a kilogram of pure gold.