Joshua Spencer Thompson (1828 – December 20, 1880) was a Canadian journalist and politician.

[1] Born in Belfast, Ireland, Thompson emigrated to British Columbia in 1858.

Thompson was a journalist and accountant prior to becoming an MP.

A Liberal-Conservative, Thompson sat in the 1st Canadian Parliament as a Member of Parliament in the House of Commons of Canada following his acclamation as member for Cariboo in the special byelection held in 1871 after British Columbia's entry into Confederation.

[1] Thompson died in Victoria, British Columbia.