| 1 | YN | Air Creebec (1994), Inc. | ICAO: CRQ, Callsign: Cree, IATA Prefix: 219, | CDN | AVCODES |
| 2 | YN | Youngstown and Northern R.R. Co. | 1/1975-1/1980; eliminated 1/1981; eliminated 7/1981 | | NAKINA |
| 3 | YN | Youngstown and Northern R.R. Co. | 1/75-1/80; eliminated 1/81; eliminated 7/81 | | NRHS |
| 4 | YN | YOUNGSTOWN & NORTHERN RAILROAD CO. | | | PWRC |
| 5 | YN | Youngstown and Northern R.R. Co. | | USA | TRAFFIC |
| 6 | YNBL | YANOSAN INC | | | SCAC4 |
| 7 | YNDR | YONDER FRUIT FARMS, INC. | | | SCAC4 |
| 8 | YNGC | YOUNGS COMMERCIAL TRANSFER INC | | | SCAC4 |
| 9 | YNGG | YONGS TRUCKING COMPANY | | | SCAC4 |
| 10 | YNGH | YOUNGS FUEL SERVICE | | | SCAC4 |
| 11 | YNGT | YOUNG TRANS CO | | | SCAC4 |
| 12 | YNGW | YOUNG & SONS WHOLESALE DISTRIBUTORS | | | SCAC4 |
| 13 | YNHK | YANGTZE NAVIGATION HK CO LTD | | | SCAC4 |
| 14 | YNKG | YONKES TRUCKING | | | SCAC4 |
| 15 | YNKT | YANKE, N TRANSFER LTD | | | SCAC4 |
| 16 | YNMS | YOUNG MOVING & STORAGE INC | | | SCAC4 |
| 17 | YNRC | YERENA ARAUZ, RAMON | | | SCAC4 |
| 18 | YNTR | YACYSHYN TRUCKING LTD | | | SCAC4 |
