Karl Rudolf Graf von Buol Schauenstein

Karl Rudolf Graf von Buol-Schauenstein (30 June 1760 – 23 October 1833) was Bishop of Chur in Graubünden, Switzerland (1794–1833) who also served as the last prince-bishop of Chur.

An uncle of the Austrian diplomat Karl Ferdinand Graf von Buol-Schauenstein, Buol-Schauenstein was first ordained as a priest of Chur on 14 June 1783. He was appointed as bishop on 22 January 1794; his confirmation as bishop followed on 12 September 1794, and he was ordained as such on 5 October 1794. In 1810, Buol joined the Order of Knights of Malta. Buol was appointed bishop of Chur-St. Gallen on 27 September 1824 and served in this capacity until his death.