Sweden The Battle of Siikajoki (Finnish: Siikajoen taistelu) was fought between Swedish and Russian troops on 18 April 1808 at Siikajoki, approximately 60 km south of Uleåborg, Swedish Finland (today Oulu, Republic of Finland).

The retreat was also made in an effort to delay battles until the seas thawed, and to reserve troops in case the Danes took the opportunity to attack Sweden.

The Battle of Pyhäjoki, which had been fought two days earlier, was one of the first skirmishes of the war, but Siikajoki was the first major attempt to stop the advancing Russians.

Carl Johan Adlercreutz had been appointed commander after Count Gustaf Löwenhielm had been captured by the Russian at Pyhäjoki.

The Battle of Siikajoki is described in the poem "Adlercreutz" in Runeberg's epic Tales of Ensign Stål.