Ramsay Crooks (2 January 1787 – 6 June 1859) was an American fur trader who immigrated to Canada from Greenock, Scotland.

He helped W. Price Hunt to organize and lead an overland trip to Astoria in the Oregon Country for John Jacob Astor in 1809 through 1813, as a partner in the Pacific Fur Company.

It has been reported that he was a clerk with Maitland, Garden and Auldjo,[1] a Montreal mercantile firm that supplied dry goods and hardware to the Indians.

McClellan was described as “a man of many perilous exploits and hairbreadth escapes, a sure shot, and one of the most romantic characters in the annals of the Western fur trade”.

They formed an expedition of 40 men and went as far as South Dakota on the Missouri, but were forced back to Council Bluffs, Iowa, by about 600 Sioux.