| 1 | NCLX | Nova Chemicals Ltd. | added 4/1997; 7/2000-7/2005 | | NAKINA |
| 2 | NCLX | North American Cyanamid Ltd. | 10/1957; eliminated 7/1958 | | NAKINA |
| 3 | NCLX | North American Cyanamid Ltd., Welland Works | 4/1947-7/1954 | | NAKINA |
| 4 | NCLX | North American Cyanamid Ltd. | 1/52-10/57; eliminated 7/58 | | NRHS |
| 5 | NCLX | Nova Chemicals Ltd. | added 4/97; 7/2000 | | NRHS |
| 6 | NCLX | *NORTH AMERICAN CYANAMID LTD. | | | PWRC |
| 7 | NCLX | +NOVA CHEMICALS INCORPORATED | | | PWRC |
| 8 | NCLX | Nova Chemicals | | | RSRV |
| 9 | NCLX | NOVA CHEMICALS LTD | | | SCAC4 |
| 10 | NCLX | Nova Chemicals Ltd. | | USA | TRAFFIC |
