| 1 | BOB | Jet Club Ltd. | Callsign: Bob Jet, | PL | AVCODES |
| 2 | BOB | Bonair Business Charter GmbH | Callsign: Bob, ICAO callsign changed to Twister | D | AVCODES |
| 3 | BOB | Bonair Business Charter GmbH | Callsign: Twister, ICAO callsign changed from Bob | D | AVCODES |
| 4 | BOB | MLP Aviation | Callsign: Bobfly, | GB | AVCODES |
| 5 | BOB | Backbone Aviation A/S | Callsign: Backbone, | DK | AVCODES |
| 6 | BOB | Bayerische Oberlandbahn GmbH | Holzkirchen (auch BayOB, Connex-Gruppe > Veolia Verkehr) | D | privat-bahn.de |
| 7 | BOB | Bodensee-Oberschwaben Bahn GmbH | Friedrichshafen | D | privat-bahn.de |
| 8 | BOB | Bayerische Oberlandbahn | | D | TRAFFIC |
| 9 | BOB | Berner Oberland Bahnen | | CH | VKM |
| 10 | BOBA | BOBCAT COMPANY | | | SCAC4 |
| 11 | BOBB | BOBS BROKERAGE INC | | | SCAC4 |
| 12 | BOBC | BOUCHER, L S EXPRESS INC | | | SCAC4 |
| 13 | BOBD | BOARDMAN, BUDDY TRUCKING | | | SCAC3 |
| 14 | BOBE | BOBS EXPRESS LINE | | | SCAC3 |
| 15 | BOBF | BOBS TRANSFER INC | | | SCAC3 |
| 16 | BOBFN | Bodensee-Oberschwaben-Bahn | | DE | VKM |
| 17 | BOBG | BOBS TRUCKING | | | SCAC3 |
| 18 | BOBG | BOBS GARAGE INC | | | SCAC4 |
| 19 | BOBH | BOBS HI DISTRIBUTORS | | | SCAC3 |
| 20 | BOBH | BLOOM DEPOT INC | | | SCAC4 |
| 21 | BOBI | BOBBITT TRUCKING | | | SCAC4 |
| 22 | BOBJ | BUTTERBAUGH OIL CO INC | | | SCAC4 |
| 23 | BOBK | BOYD, BOB TRUCKING INC | | | SCAC3 |
| 24 | BOBN | BOBS TRUCKING | | | SCAC3 |
| 25 | BOBN | BANNER TRANSPORT INC | | | SCAC4 |
| 26 | BOBO | BOBS DELIVERY SERVICE | | | SCAC3 |
| 27 | BOBO | BOB-O EXPRESS | | | SCAC4 |
| 28 | BOBP | BOBS TRANSFER & STORAGE | | | SCAC3 |
| 29 | BOBP | BYRD TRANSPORT INC | | | SCAC4 |
| 30 | BOBQ | BOBB, MICHAEL J INC | | | SCAC3 |
| 31 | BOBR | BORDER BROKERAGE INC | | | SCAC3 |
| 32 | BOBR | BUSINESS SOLUTIONS INTERNATIONAL IN | | | SCAC4 |
| 33 | BOBT | B & B TRAVEL INC | | | SCAC3 |
| 34 | BOBU | LANXESS SOLUTIONS UK LTD | | GB | BIC |
| 35 | BOBU | GREAT LAKES UK LTD | | | SCAC4 |
| 36 | BOBV | BOBO TRANSPORT | | | SCAC4 |
| 37 | BOBX | Freeman Gas of N.C., Inc. | added 1/1971; 1/1975-7/2000; eliminated 4/2003; 7/2005 (not listed) | | NAKINA |
| 38 | BOBX | Freeman Gas of N.C., Inc. | added 1/71; 1/75-7/2000 | | NRHS |
| 39 | BOBX | FREEMAN GAS OF NORTH CAROLINA | | | PWRC |
| 40 | BOBX | Freeman Gas of N.C. | | | RSRV |
| 41 | BOBX | FREEMAN GAS | | | SCAC4 |
| 42 | BOBY | BOBBYS TOURS | | | SCAC3 |
| 43 | BOBY | Bayerische Oberlandbahn | | DE | VKM |
