Mathias Steuchius (Swedish pronunciation: ['stø:kɪɵs]; 26 October 1644 – 2 August 1730) was Bishop of the Diocese of Lund, 1694 to 1714 and Archbishop of Uppsala in the Swedish Church from 1714 to his death. In 1693 he was made doctor of theology in Uppsala, and in 1694 promoted to professor. But by June 1694 he was summoned to Lund, to be appointed Bishop of Lund. At the death of Haquin Spegel, Steuchius was elected new archbishop in 1714. He worked in Uppsala until his death in 1730. Steuchius was known as a devoted and righteous man by his way of living and teaching.