Tobias Clausnitzer (5 February 1619 − 7 May 1684) was a German Lutheran pastor and hymn writer.
Born in Thum, Clausnitzer studied theology at the University of Leipzig from 1642. In 1644, he became military chaplain (Feldprediger) for a unit of the Swedish army. When the Thirty Years' War ended, he held a service celebrating the Peace of Westphalia in Weiden in der Oberpfalz in 1649. He settled, became pastor, and later also Kirchenrat and inspector of Parkstein and Weiden. He died in 1684 as Superintendent in Weiden.
He wrote theological treaties, sermons and hymns. "Liebster Jesu, wir sind hier" became popular, also in translations.
