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| Rank | Industry | Revenue Growth | Market Size | Businesses | Employees |
|---|---|---|---|---|---|
| 1 | Lubricant & Other Petroleum Product Manufacturing in Canada | -5.6% | $3.3bn | 85 | 1,970 |
| 2 | Mining, Oil & Gas Machinery Manufacturing in Canada | -3.8% | $5.2bn | 396 | 13,932 |
| 3 | Wiring Device Manufacturing in Canada | -3.7% | $1.3bn | 71 | 4,057 |
| 4 | Radio Broadcasting in Canada | -3.7% | $1.5bn | 614 | 8,891 |
| 5 | Jewellery Manufacturing in Canada | -3.4% | $7.1bn | 1,448 | 4,076 |
| 6 | Household Furniture Manufacturing in Canada | -3.3% | $4.9bn | 2,669 | 26,755 |
| 7 | Wired Telecommunications Carriers in Canada | -3.3% | $5.2bn | 37 | 6,581 |
| 8 | Loan Administration, Cheque Cashing & Other Services in Canada | -3.0% | $1.2bn | 658 | 4,102 |
| 9 | Cigarette & Tobacco Manufacturing in Canada | -2.4% | $2.7bn | 35 | 2,019 |
| 10 | Geophysical Services in Canada | -2.3% | $916.7m | 1,095 | 3,770 |
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The fastest declining industry in Canada in 2026 is Lubricant & Other Petroleum Product Manufacturing, with a -5.6% revenue growth for 2026. This ranking is based on data compiled by IBISWorld industry analysts.
The top three fastest declining industries in Canada in 2026 are Lubricant & Other Petroleum Product Manufacturing, Mining, Oil & Gas Machinery Manufacturing and Wiring Device Manufacturing. Rankings are updated using IBISWorld data.