John I (Swedish: Johan Sverkersson; c. 1201 – March 10, 1222) was a Swedish king elected in 1216.
When King Eric died suddenly in fever in 1216, the teen-aged John was hailed king by the Swedish aristocracy against the will of the Pope in Rome. John was crowned in 1219 and remained king until his death on March 10, 1222. John died unmarried and childless. In 1222, the rival dynasty's young heir, Erik Eriksson ascended the throne at the age of 6 to reign as King Eric XI of Sweden.