Frants Berg (1504 – 2 November 1591) was a Danish clergyman who served as the Bishop of Oslo.

His father was a German born sculptor and painter who was engaged by John, King of Denmark and whose decorative work appeared in Danish churches.

[2] In 1531, he was rector in Odense, in 1540 he was vicar at Ribe Cathedral and in 1546 of St. Nicholas' Church in Copenhagen.

Berg played a key role in the conversion of the Church of Norway.

His daughter Gidse Frantsdatter Berg (born 1545) was married to Rasmus Hjort (ca.