The Holy Cross Church (Norwegian: Korskirken) was a small medieval parish church for the northern part of the Old Town of Oslo, Norway.
The church is not mentioned in the accounts of the fighting in Oslo in 1240 between King Haakon IV and Duke Skule, suggesting that the church was built prior to the battle.
In 1989, a stick with runic inscriptions, dated to the first half of the 13th century, was found.
When the church was built, it was located far north in the city, and an urban development north of the church came in the second half of the 13th century and the 14th century.
This article about a church or other Christian place of worship in Norway is a stub.