| 1 | BLU | I M P Aviation Services Ltd. | Callsign: Bluenose, | CDN | AVCODES |
| 2 | BLU | Solutions Air Charter, LLC | Callsign: Bluegrass, | USA | AVCODES |
| 3 | BLU | IMP Aviation Services | | | ICAO1 |
| 4 | BLU | Blue Ridge Southern Railroad | | | RSRV |
| 5 | BLUA | BLOUIN CARTAGE INC | | | SCAC3 |
| 6 | BLUA | BLUE STAR TRANSPORT INC | | | SCAC4 |
| 7 | BLUB | BLU SHIPS SRL | | | SCAC4 |
| 8 | BLUBA | Blumberger Bahnbetrieb (Sauschwänzlebahn) | | D | TRAFFIC |
| 9 | BLUD | BLUE, DON, HEAVY HAULING COMPANY | | | SCAC3 |
| 10 | BLUD | BLUE DIAMOND AUTO SALES | | | SCAC4 |
| 11 | BLUE | BLUE LINE EXPRESS INC | | | PWRC |
| 12 | BLUE | BLUESHELL SHIPPING LTD NICOSIA CYPR | | | SCAC3 |
| 13 | BLUEG | Blue & Gray Transit, NJ | | USA | TRAFFIC |
| 14 | BLUEW | Blue & White Bus Company, NJ | | USA | TRAFFIC |
| 15 | BLUF | BLUE LINE TRANSPORT INC | | | SCAC3 |
| 16 | BLUF | BCARGO LOGISTICS USA INC | | | SCAC4 |
| 17 | BLUG | BLUE GOOSE INC | | | SCAC3 |
| 18 | BLUH | BLUE HEN LINES, INC | | | SCAC3 |
| 19 | BLUI | BOWMAN, LOW TRANSPORTATION | | | SCAC3 |
| 20 | BLUI | BALES UNLIMITED INC | | | SCAC4 |
| 21 | BLUJ | BLUE LINE TRUCKING | | | SCAC3 |
| 22 | BLUK | BELL TRUCKING | | | SCAC3 |
| 23 | BLUL | BLUE LINE TRUCKING | | | SCAC4 |
| 24 | BLUM | BLUME INC OF NEW JERSEY | | | SCAC3 |
| 25 | BLUM | CBV Blumhardt Fahrzeuge GmbH & Co. KG | | D | TRAFFIC |
| 26 | BLUN | BLUE CORN GALLERY | | | SCAC4 |
| 27 | BLUO | BATTLE, LOUIE TRUCKING | | | SCAC3 |
| 28 | BLUO | BLUE RIDGE LIMOUSINE AND TOUR SERVI | | | SCAC4 |
| 29 | BLUP | BEST LOGISTICS USA CORP | | | SCAC4 |
| 30 | BLUQ | BLUE LINE STORAGE COMPANY | | | SCAC3 |
| 31 | BLUR | BALTUS TRANSPORT CO INC | | | SCAC3 |
| 32 | BLUS | BLUE SKY SERVICES INC | | | SCAC4 |
| 33 | BLUV | BLUE VALLEY FREIGHT LINE | | | SCAC3 |
| 34 | BLUW | BLUM, WYLIE G | | | SCAC3 |
