James Nicol Grieve (July 17, 1855 – August 4, 1918) was a farmer and political figure in Ontario, Canada.
He represented Perth North in the House of Commons of Canada from 1891 to 1896 as a Liberal member.
He was born in Mornington Township, Canada West, the son of Scottish immigrants.
Grieve's election in 1891 was overturned on appeal but he won the subsequent by-election in 1892.
Grieve was also a director of the Elma Fire Insurance Company and the Farmer's Institute for the North Region of Perth.