| 1 | ESP | Espeair | Callsign: Espeair, Ceased operations | CZ | AVCODES |
| 2 | ESP | Esperia Aviation Services S.p.A. | | I | AVCODES |
| 3 | ESPA | ESPARZA, LEO TRUCKING | | | SCAC3 |
| 4 | ESPC | ESPINOSA CARTAGE COMPANY | | | SCAC3 |
| 5 | ESPC | ESP TRANSPORTATION INC | | | SCAC4 |
| 6 | ESPD | ESTATE PRODUCTS INC | | | SCAC4 |
| 7 | ESPE | ESPENSHIP MOVING AND STORAGE INC | | | SCAC3 |
| 8 | ESPG | ESPINOZA GUAJARDO, JOSE EDUARDO | | | SCAC4 |
| 9 | ESPI | EASTPORT INTERMODAL CORP | | | SCAC3 |
| 10 | ESPK | ESP TRANSPORTATION LLC | | | SCAC4 |
| 11 | ESPL | ESTEP LOGISTICS INC | | | SCAC4 |
| 12 | ESPM | ESCARPMENT TRANSPORTATION SYSTEMS I | | | SCAC3 |
| 13 | ESPN | East Penn Railroad LLC | added 10/2007 | | NAKINA |
| 14 | ESPN | EAST PENN RAILROAD LLC | | | PWRC |
| 15 | ESPN | EAST PENN RAILROAD LLC | | | SCAC4 |
| 16 | ESPN | East Penn Railroad LLC | | USA | TRAFFIC |
| 17 | ESPO | ESPOSITO TRUCKING INC | | | SCAC3 |
| 18 | ESPO | EXPRESS STEPHANE PELLETIER INC | | | SCAC4 |
| 19 | ESPQ | EAGLE STEEL PRODUCTS INC | | | SCAC4 |
| 20 | ESPR | ESPARZA EXPRESS | | | SCAC4 |
| 21 | ESPT | ESPINOSA TRUCKING COMPANY | | | SCAC4 |
| 22 | ESPU | EMIRATES SHIPPING (HONG KONG) LTD | | HK | BIC |
| 23 | ESPU | NAVIGAZIONE E SPERCO ENRICO SPERCO | | | SCAC3 |
| 24 | ESPU | EMIRATES SHIPPING (HONG KONG) LTD | | | SCAC4 |
| 25 | ESPW | EDWARDS | | | SCAC4 |
| 26 | ESPX | East Side Packing Co. (Hunter Packing Co.) | 7/1932 | | NAKINA |
| 27 | ESPX | East Side Packing Co. | 7/1923-7/1930 | | NAKINA |
| 28 | ESPX | HUNTER PACKING CO. [EAST SIDE PACKING CO.] | | | PWRC |
| 29 | ESPY | ESPA CARGO | | | SCAC4 |
