NAICS Canada and ISIC Rev. 4
Use the official correspondence table to map Canadian codes to the UN classification.
The ISIC crosswalk lets you compare Canadian industries with the international UN standard used in statistics and research.
The correspondence is not always one-to-one. Some codes point to ranges or approximate matches, which is why the explanatory note matters.
On each code page, the ISIC block shows the code, title, and note from the official correspondence CSV.