Thomas Simonsson

The tomb of Bishop Thomas in Strängnäs Cathedral.

Thomas Simonsson (1350 – 1443) was a Swedish theologian and poet and the Bishop of Diocese of Strängnäs 1429 – 1443, in the Church of Sweden. He is of unknown origin.

He became canon in the diocese of Strängnäs in 1405 and studied liberal arts and canon law at the universities in Paris and Leipzig. He was one of the executors of Philippa of England's will. In 1432 he was nominated archbishop by the King Eric of Pomerania, but when the archbishop Jöns Håkansson died, the chapter elected Olov Laurensson new archbishop against the King's volition. He died in 1443 and was interred in Strängnäs Cathedral.