| 1 | WAB | Aero Industries, Inc. | Callsign: Wabash, | USA | AVCODES |
| 2 | WAB | Aero Industries Inc | | | ICAO1 |
| 3 | WAB | Wabash R.R. | 10/1957-7/1965 | | NAKINA |
| 4 | WAB | Wabash R.R. Co. (Norfolk and Western Ry. Co.) | 10/1966-4/1970 | | NAKINA |
| 5 | WAB | Norfolk and Western Ry. Co. | 1/1975-1/1980; eliminated 1/1991 | | NAKINA |
| 6 | WAB | Norfolk Southern Ry. Co. | added 1/1991; 1/1994-7/2000 | | NAKINA |
| 7 | WAB | Norfolk Southern Ry. Co. (Norfolk Southern) | 7/2005 | | NAKINA |
| 8 | WAB | Wabash R.R. | 10/57-7/65 | | NRHS |
| 9 | WAB | Wabash R.R. Co. (Norfolk and Western Ry. Co.) | 10/66-4/70 | | NRHS |
| 10 | WAB | Norfolk and Western Ry. Co. | 1/75-1/80; eliminated 1/91 | | NRHS |
| 11 | WAB | Norfolk Southern Ry. Co. | added 1/91; 1/94-7/2000 | | NRHS |
| 12 | WAB | Westfälische Almetalbahn GmbH | Altenbeken | D | privat-bahn.de |
| 13 | WAB | NORFOLK SOUTHERN RAILWAY COMPANY [NORFOLK & WESTERN RWY.; WABASH RR] | | | PWRC |
| 14 | WAB | Wabash Railroad (Norfolk Southern) | | | RSRV |
| 15 | WAB | Wengernalpbahn | | CH | TRAFFIC |
| 16 | WAB | Westfälische Almetalbahn | | DE | VKM |
| 17 | WABA | Waldbahn Almetal e.V. | | DE | VKM |
| 18 | WABB | WALTERS INC | | | SCAC4 |
| 19 | WABC | ABC LINES | | | PWRC |
| 20 | WABC | W S TRANSPORTATION | | | SCAC4 |
| 21 | WABD | Westfälische Almetalbahn | Real: WAB | D | TRAFFIC |
| 22 | WABF | WALGATE, WENDY | | | SCAC4 |
| 23 | WABI | WARWICK ORCHARDS & NURSERY LTD | | | SCAC4 |
| 24 | WABM | WABASH MFG INC | | | SCAC4 |
| 25 | WABN | WALBON AND COMPANY INC | | | SCAC4 |
| 26 | WABP | WADE, GARY TRUCKING | | | SCAC4 |
| 27 | WABR | Wabash Railroad | Real: WAB | USA | TRAFFIC |
| 28 | WABS | WARDANE ENTERPRISES INC | | | SCAC4 |
| 29 | WABT | WALNUT HILL TRANSPORT | | | SCAC4 |
| 30 | WABU | HOYER GMBH | | D | BIC |
| 31 | WABU | HOYER GMBH | | | SCAC4 |
| 32 | WABX | Westinghouse Air Brake Co. | 7/1923 | | NAKINA |
| 33 | WABX | WESTINGHOUSE AIR BRAKE CO. (WABCO) | | | PWRC |
| 34 | WABZ | WTL RAIL CORPORATION | | | PWRC |
| 35 | WABZ | WTL Rail Corporation | | | RSRV |
| 36 | WABZ | WTL RAIL CORPORATION | | | SCAC4 |
