Robert Murray Keith

{{Short description|British diplomat}}

{{Use dmy dates|date=April 2022}}

Robert Murray Keith (c. 1697–1774) was a British diplomat. He was descended from a younger son of the 2nd Earl Marischal.

Keith was minister in Vienna in 1748 and from 1753 Minister-plenipotentiary. In 1757, he transferred to St. Petersburg (arriving in 1758) and remained there until October 1762, when the imperial government requested that he be replaced by a nobleman. He then retired to live at the Hermitage near Edinburgh, being known to his friends, among whom were leading men of letters, as "Ambassador Keith."{{sfn|Chisholm|1911}}

Keith married Margaret, daughter of Sir William Cunningham, 2nd baronet, of Caprington before 1730 when their son Robert Murray Keith (the younger) was born. Another son was Sir Basil Keith, a naval officer and Governor of Gibraltar.{{cite DNB|wstitle= Keith, Robert (d.1774) |volume= 30 |last= Archbold |first= W.A.J. |author-link= |pages= 328-329 |year= 1892 | short=1}}