| 4801 | BHPX | BHP Navajo Mine | | USA | TRAFFIC |
| 4802 | BHPZ | BURNS HARBOR PORT AUTHORITY | | | PWRC |
| 4803 | BHQT | BETTER HALF TRUCKING INC | | | SCAC3 |
| 4804 | BHR | Bighorn Airways, Inc. | Callsign: Bighorn, | USA | AVCODES |
| 4805 | BHR | Bighorn Airways, Inc. | Callsign: Bighorn Air, ICAO callsign changed to Birhorn | USA | AVCODES |
| 4806 | BHR | Bighorn Airways | | | ICAO1 |
| 4807 | BHR | Bath and Hammondsport R.R. Co. | Real: BH | USA | TRAFFIC |
| 4808 | BHRC | BARRETT, HR LLC | | | SCAC4 |
| 4809 | BHRD | BRANHAM, ROGER & DORIS TRUCKING | | | SCAC3 |
| 4810 | BHRD | BERNHARDT TRUCKING INC | | | SCAC4 |
| 4811 | BHRE | BEHRENDS, RONALD W | | | SCAC3 |
| 4812 | BHRG | BROTHERS TRUCKING | | | SCAC4 |
| 4813 | BHRI | BUCHANAN HAULING & RIGGING INC | | | SCAC4 |
| 4814 | BHRK | BHELA ROAD LINK INC | | | SCAC4 |
| 4815 | BHRL | BAHAMAS RANGER LTD. | | | SCAC3 |
| 4816 | BHRL | BEACH ROAD LOBSTER COMPANY | | | SCAC4 |
| 4817 | BHRM | BEHRMANS MOVING & STORAGE INC | | | SCAC3 |
| 4818 | BHRN | BEHRMAN TRANSPORT INC | | | SCAC3 |
| 4819 | BHRN | BEHRMAN TRANSPORT INC | | | SCAC4 |
| 4820 | BHRO | BRETTHAUER OIL CO | | | SCAC4 |
| 4821 | BHRQ | BROWNING, HENRY H | | | SCAC3 |
| 4822 | BHRR | BOOTHEEL REGIONAL RAIL CORP. | | | PWRC |
| 4823 | BHRS | BERGEN HUDSON ROOFING SUPPLY CO | | | SCAC3 |
| 4824 | BHRT | BARNHART TRUCKING | | | SCAC3 |
| 4825 | BHRX | Bellefonte Historical Ry. Society | eliminated 4/2005; 7/2005 (not listed) | | NAKINA |
| 4826 | BHRX | Bellefonte Historical Ry. Co. | added 10/2003 | | NAKINA |
| 4827 | BHRX | BELLEFONTE HISTORICAL RAILROAD SOCIETY | | | PWRC |
| 4828 | BHRX | BELLEFONTE HISTORICAL RAILROAD SOCI | | | SCAC4 |
| 4829 | BHS | Bahamasair | IATA: UP, Callsign: Bahamas, IATA Prefix: 111, Designator UP recall by IATA | BS | AVCODES |
| 4830 | BHS | Bahamasair | IATA: UP, Callsign: Bahamas, IATA Prefix: 111, Name changed to Bahamasair Holdings Limited. Designator UP reinstated by IATA | BS | AVCODES |
| 4831 | BHS | Bahamasair Holdings Ltd. | IATA: BH, Callsign: Bahamas, Name changed to Bahamasair | BS | AVCODES |
| 4832 | BHS | Bahamasair Holdings Limited | IATA: UP, Callsign: Bahamas, IATA Prefix: 111, Name changed from Bahamasair. Designator UP reinstated by IATA | BS | AVCODES |
| 4833 | BHS | Bahamasair | IATA: UP | | ICAO1 |
| 4834 | BHS | BONHOMIE & HATTIESBURG SOUTHERN RAILROAD CO. | | | PWRC |
| 4835 | BHS | Bahamasair | | BS | TRAFFIC |
| 4836 | BHSA | BULLET HOT SHOT INC | | | SCAC4 |
| 4837 | BHSC | BAHIA SALINAS COMPANIA NAVIERA S A, | | | SCAC3 |
| 4838 | BHSE | BLACK HAWK SHIPPING ENTERPRISES INC | | | SCAC4 |
| 4839 | BHSN | BLUE HORIZON SHIPPING INC | | | SCAC4 |
| 4840 | BHSO | BW HOT SHOT | | | SCAC4 |
| 4841 | BHSP | BERNHARD SCHULTE SHIPMANAGEMENT (CY | | | SCAC4 |
| 4842 | BHSQ | BLUEHILL SHIPPING COMPANY LTD. | | | SCAC3 |
| 4843 | BHSR | BRIGHT STAR SHIPPING COMPANY | | | SCAC3 |
| 4844 | BHSR | BOWEN HAULING SERVICE | | | SCAC4 |
| 4845 | BHSS | BEVERLY HILLS SHUTTLE SERVICE INC | | | SCAC3 |
| 4846 | BHST | BH SHIPPING & TRADING | | | SCAC4 |
| 4847 | BHSU | BUZWAIR GASES | | Q | BIC |
| 4848 | BHSV | B H S INC | | | SCAC3 |
| 4849 | BHSW | BIRCH SHIPPING LIMITED | | | SCAC4 |
| 4850 | BHSX | The Brier Hill Steel Co. (Youngstown Sheet & Tube Co.) | 7/1923 | | NAKINA |
| 4851 | BHSX | YOUNGSTOWN SHEET & TUBE CO. [BRIER HILL STEEL CO.] | | | PWRC |
| 4852 | BHSY | B & H SYSTEMS INC | | | SCAC3 |
| 4853 | BHSY | B & H SYSTEMS INC | | | SCAC4 |
| 4854 | BHT | Bright Air | Callsign: Brightair, | NL | AVCODES |
| 4855 | BHT | Bogazici Hava Tasimacilik A.S. | IATA: PQ, Callsign: Basfir, | TR | AVCODES |
| 4856 | BHT | Bright Air | | | ICAO1 |
| 4857 | BHT | BRUSH HILL TRANSPORTATION COMPANY | | | SCAC4 |
| 4858 | BHTA | BETTENHAUSEN TRANSPORT INC | | | SCAC3 |
| 4859 | BHTB | BAY HARBOR TRANSPORT INC | | | SCAC4 |
| 4860 | BHTE | BUCHTA, ELMER TRUCKING LLC | | | SCAC4 |
| 4861 | BHTF | B-H TRANSFER CO | | | SCAC3 |
| 4862 | BHTG | B & H TRUCKING | | | SCAC3 |
| 4863 | BHTJ | BRUNCO HOTSHOTS INC | | | SCAC3 |
| 4864 | BHTJ | B & H TRANSPORTATION INC | | | SCAC4 |
| 4865 | BHTL | BURKHALTER TRAVEL AGENCY INC | | | SCAC3 |
| 4866 | BHTM | BRECHT, RAY TRUCKING INC | | | SCAC3 |
| 4867 | BHTN | BH TRANSPORT INC | | | SCAC3 |
| 4868 | BHTO | B-H TRANSPORT | | | SCAC3 |
| 4869 | BHTO | B & H TRACTOR & TRUCK INC | | | SCAC4 |
| 4870 | BHTP | BIG HORN TRANSPORTATION INC | | | SCAC3 |
| 4871 | BHTQ | BALISTRERI & HOLMES TRANSPORT INC | | | SCAC3 |
| 4872 | BHTR | BLACKS HARBOUR TRANSFER LIMITED | | | SCAC3 |
| 4873 | BHTR | BLACKS HARBOUR TRANSFER LIMITED | | | SCAC4 |
| 4874 | BHTT | BIG HORN TRANSPORT LTD | | | SCAC3 |
| 4875 | BHTV | BENTLEY HEDGES TRAVEL SERVICE INC | | | SCAC3 |
| 4876 | BHTW | B & H TRANSPORT | | | SCAC4 |
| 4877 | BHTX | Blossman Hydratane Gas, Inc. | added 4/1962; 7/1965; eliminated 10/1965 | | NAKINA |
| 4878 | BHTX | Barnhart Crane & Rigging Co. | added 7/1998; 7/2000; eliminated 1/2003; 7/2005 (not listed) | | NAKINA |
| 4879 | BHTX | A.R. Blossman, Sr. | added 10/1961; eliminated 4/1962 | | NAKINA |
| 4880 | BHTX | A.R. Blossman, Sr. | eliminated 4/62 | | NRHS |
| 4881 | BHTX | Blossman Hydratane Gas, Inc. | added 4/62; 7/65; eliminated 10/65 | | NRHS |
| 4882 | BHTX | Barnhart Crane & Rigging Co. | added 7/98; 7/2000 | | NRHS |
| 4883 | BHTX | *BLOSSMAN HYDRATRANE GAS CO. [A. R. BLOSSMAN, SR.] | | | PWRC |
| 4884 | BHTX | +BARNHART CRANE & RIGGING CO. | | | PWRC |
| 4885 | BHTX | Bernhart Crane and Rigging | | | RSRV |
| 4886 | BHTX | BARNHART CRANE & RIGGING CO | | | SCAC4 |
| 4887 | BHTY | BUCH, TERRY | | | SCAC3 |
| 4888 | BHTY | B & H TANK | | | SCAC4 |
| 4889 | BHU | Business Air Ltd. | Callsign: Business Hungary, | H | AVCODES |
| 4890 | BHUH | BROWN, HUGH TRUCKING | | | SCAC3 |
| 4891 | BHUH | BROWN, HUGH TRUCKING | | | SCAC4 |
| 4892 | BHUK | BHANGU TRUCKING | | | SCAC4 |
| 4893 | BHUT | BACKHAUL TRANSPORT SERVICES INC | | | SCAC3 |
| 4894 | BHV | Specavia Air Company | Callsign: Aviaspec, | RUS | AVCODES |
| 4895 | BHV | Specavia Air Company | | | ICAO1 |
| 4896 | BHVN | BATEMAN HORSE VANS | | | SCAC4 |
| 4897 | BHW | Busbetrieb Hinterthurgau - Wil | | CH | TRAFFIC |
| 4898 | BHWA | BOSS HAWG METALS LLC | | | SCAC4 |
| 4899 | BHWB | BENEATH HIS WINGS LLC | | | SCAC4 |
| 4900 | BHWC | BLAHNIK, H W TRUCKING INC | | | SCAC4 |
