Magnus Olai Beronius (18 October 1692 – 18 May 1775) was Archbishop of Uppsala in the Church of Sweden from 1764 to his death.

[1] Magnus Beronius was the son of Olaus Magni Beronis and Catharina Celsia and was born in Uppsala, Sweden.

He studied at Uppsala University receiving his master's degree in 1716.

After he undertook a trip through Europe, he was appointed a theology lecturer at Uppsala University in 1727.

He was elected Archbishop of Uppsala after the death of Samuel Troilius in 1764.