| 1 | HS | Skyways Regional AB | ICAO: HIL, Callsign: Highland, Name changed to Svenska Direcktflyg AB. Name changed from Highland Air AB | S | AVCODES |
| 2 | HS | Highland Air AB | ICAO: HIL, Callsign: Highland, Name changed to Skyways Regional AB | S | AVCODES |
| 3 | HS | Svenska Direktflyg AB | ICAO: HIL, Callsign: Highland, ICAO designator changed to SKH, ICAO callsign changed to Skyreg. Name changed from Skyways Regional AB | S | AVCODES |
| 4 | HS | Svenska Direktflyg AB | ICAO: SKH, Callsign: Skyreg, ICAO designator changed to HSV. ICAO designator changed from HIL, ICAO callsign changed from Highland. Name changed from Skyways Regional AB | S | AVCODES |
| 5 | HS | Svenska Direktflyg AB | ICAO: HSV, Callsign: Highswede, ICAO designator changed from SKH, ICAO callsign changed from Skyreg. Flight also operated by AIS Airlines (IS/PNX). Website shows flight using IATA designator W2 (FlexFlight ApS). Name changed from Skyways Regional AB | S | AVCODES |
| 6 | HS | Beechcraft Sales (PTY) Ltd. | Callsign: Beechsales, | ZA | AVCODES |
| 7 | HS | Hansung Airlines | ICAO: HAN, Callsign: Hansung Air, Rebranded as T'Way Airline. Suspended operations October 2008. | ROK | AVCODES |
| 8 | HS | SprintAir SA | ICAO: SRN, Callsign: Sprintair, IATA designator changed to P8. Founded in 2003. | PL | AVCODES |
| 9 | HS | Heli Securite Helicopter Airline | ICAO: HLI, Callsign: Heli Saint-Tropez, Designator H4 recalled by IATA. | F | AVCODES |
| 10 | HS | Chattahoochee Bay Rd., Inc. | added 4/2007 | | NAKINA |
| 11 | HS | H&S R.R. Co. | added 10/1992; 1/1994-7/2005 | | NAKINA |
| 12 | HS | Hartford and Slocomb R.R. Co. | 1/1975; added 10/1975; 1/1980; eliminated 10/1992 | | NAKINA |
| 13 | HS | Hartford and Slocomb R.R. Co. | 1/75-1/80; eliminated 10/92 | | NRHS |
| 14 | HS | H&S R.R. Co. | added 10/92; 1/94-7/2000 | | NRHS |
| 15 | HS | *H & S RAILROAD [HARTFORD & SLOCOMB RAILROAD COMPANY, INC.; HOUSATONIC SOUTHERN] | | | PWRC |
| 16 | HS | +CHATTAHOOCHEE BAY RD., INC. | | | PWRC |
| 17 | HS | Housatonic Southern (H and S Railroad) | | | RSRV |
| 18 | HS | Hartford and Slocomb R.R. Co. | | USA | TRAFFIC |
| 19 | HSA | East African Safari Air Limited | IATA: RX, Callsign: Car Hire, IATA designator changed to S9. Name changed from CHS Aviation Limited | EAK | AVCODES |
| 20 | HSA | CHS Aviation Limited | Callsign: Car Hire, Name changed to East African Safari Air Limited | EAK | AVCODES |
| 21 | HSA | East African Safari Air Limited | IATA: S9, Callsign: Car Hire, IATA Prefix: 895, ICAO Callsign changed to Duma. IATA designator changed from RX*. Name changed from CHS Aviation Limited | EAK | AVCODES |
| 22 | HSA | East African Safari Air Limited | IATA: S9, Callsign: Duma, IATA Prefix: 895, Ceased operations. ICAO Callsign changed from Car Hire. IATA designator changed from RX*. Name changed from CHS Aviation Limited | EAK | AVCODES |
| 23 | HSA | East African Safari Air | IATA: S9 | | ICAO1 |
| 24 | HSA | High Speed Alliance | | NL | VKM |
| 25 | HSAA | HOADE, STEVE TRUCKING INC | | | SCAC4 |
| 26 | HSAD | H & S TRUCKING INC | | | SCAC4 |
| 27 | HSAF | HI SPEED TRUCKING INC | | | SCAC4 |
| 28 | HSAG | HIGH SIERRA TRANSPORT | | | SCAC4 |
| 29 | HSAG | Heilbronner Strassenbahn AG | City: Heilbronn | D | TRAFFIC |
| 30 | HSAI | HUDON, DAN SALES INC | | | SCAC4 |
| 31 | HSAJ | HOOSIER SPECIALIZED TRANSPORTATION | | | SCAC4 |
| 32 | HSAK | HARVEST SELECT CATFISH | | | SCAC4 |
| 33 | HSAL | HENSALL GLOBAL LOGISTICS INC | | | SCAC4 |
| 34 | HSAM | HILL, SAM OIL CO | | | SCAC4 |
| 35 | HSAO | HUSTON, SAM TRUCKING | | | SCAC4 |
| 36 | HSAR | HOOSIER AIR TRANSPORT INC | | | SCAC4 |
| 37 | HSAS | HEATON SANITATION LTD | | | SCAC4 |
| 38 | HSAT | HARBOR SHIPPING AND TRADING S A | | | SCAC4 |
| 39 | HSAV | HSB LOGISTIC | | | SCAC4 |
| 40 | HSB | Szer-Bon RT | Callsign: Sarbon, | H | AVCODES |
| 41 | HSB | Harzer Schmalspurbahnen GmbH | Wernigerode | D | privat-bahn.de |
| 42 | HSB | Harzer Schmalspurbahnen | | D | TRAFFIC |
| 43 | HSB | Harzer Schmalspurbahnen | | DE | VKM |
| 44 | HSBA | Hanauer Strassenbahn AG | City: Hanau | D | TRAFFIC |
| 45 | HSBG | H SCHEPERS BEREEDERUNGS GMBH & CO K | | | SCAC4 |
| 46 | HSBQ | HOSKINS BROS. TRUCKING CO | | | SCAC1 |
| 47 | HSBQ | HOSKINS BROS TRUCKING CO INC | | | SCAC4 |
| 48 | HSBR | H R S LOGISTICS LLC | | | SCAC4 |
| 49 | HSBR | | City: Heidelberg | D | TRAFFIC |
| 50 | HSBU | B.V. TRANSPORTONDERNEMING HEMPENIUS | | | SCAC3 |
| 51 | HSBU | HUB SHIPPING SDN BHD | | | SCAC4 |
| 52 | HSC | Heli Service Inc. | | J | AVCODES |
| 53 | HSCA | HUNT SEED CO INC | | | SCAC4 |
| 54 | HSCB | HARTEL SHIPPING & CHARTERING B.V. | | | SCAC4 |
| 55 | HSCE | HEADWATERS SERVICES CORPORATION | | | SCAC4 |
| 56 | HSCF | HARRIS EXPRESS LLC | | | SCAC4 |
| 57 | HSCJ | HUGHES, SHIRLEY CORPORATION, THE | | | SCAC4 |
| 58 | HSCL | HADLEY SHIPPING CO LIMITED, THE | | | SCAC4 |
| 59 | HSCM | HANSCOMS TRUCK STOP INC | | | SCAC4 |
| 60 | HSCO | HORNE MOVING SYSTEMS INC | | | SCAC4 |
| 61 | HSCP | HUNTERDON DISPATCH LLC | | | SCAC4 |
| 62 | HSCQ | HARRISBURG STORAGE CO | | | SCAC4 |
| 63 | HSCR | H & S CONSTRUCTION INC | | | SCAC4 |
| 64 | HSCU | H&S CONTAINER GMBH | | D | BIC |
| 65 | HSCU | H & S CONTAINER GMBH | | | SCAC4 |
| 66 | HSCW | HORTEN SHIPPING CO | | | SCAC4 |
| 67 | HSCX | Steel Wheels Ltd. | added 7/1984; eliminated 7/1993; 1/1994-7/2005 (not listed) | | NAKINA |
| 68 | HSCX | Hammond Standish & Co. | 7/1930-4/1938 | | NAKINA |
| 69 | HSCX | Hammond Standish & Co. | Apr-38 | | NRHS |
| 70 | HSCX | Steel Wheels Ltd. | added 7/84; eliminated 7/93; 1/94-7/2000 | | NRHS |
| 71 | HSCX | *HAMMOND STANDISH & CO. | | | PWRC |
| 72 | HSCX | *HORRY COUNTY RAILROAD - SOUTH CAROLINA | | | PWRC |
| 73 | HSCX | +STEEL WHEELS LTD | | | PWRC |
| 74 | HSCX | Hammond Standish (Steel Wheels) | | | RSRV |
| 75 | HSCX | STEEL WHEELS LIMITED | | | SCAC4 |
| 76 | HSCY | HASLER & COMPANY INC | | | SCAC4 |
| 77 | HSCZ | HIGHLINE SEVEN COOP ELEVATOR | | | PWRC |
| 78 | HSD | Horst Schuch Dienstleistungen | | DE | VKM |
| 79 | HSDB | HOT SHOT DELIVERIES INC | | | SCAC4 |
| 80 | HSDG | HAMBURG SUD D G | | | SCAC4 |
| 81 | HSDL | HARLAN LABORATORIES INC | | | SCAC4 |
| 82 | HSDN | HIGH SPEED DELIVERY INC | | | SCAC4 |
| 83 | HSDT | HOLLAND SPECIAL DELIVERY (TRUCK LOA | | | SCAC4 |
| 84 | HSDU | HS SHIPPING CO.,LTD | | ROK | BIC |
| 85 | HSDU | DEGUSSA INFRACOR GMBH | | | SCAC4 |
| 86 | HSDW | HAVI SHIPPING DMCCO | | | SCAC4 |
| 87 | HSE | Helicopteros del Sureste, S.A. | IATA: UV, Callsign: Helisureste, Name changed to INAER Helicopteros S.A. ICAO designator changed to INR. Designator UV* reinstated by IATA | E | AVCODES |
| 88 | HSE | Heliscan AS | Callsign: Heliscan, | N | AVCODES |
| 89 | HSE | Compania Helicopteros Del Sureste | | | ICAO1 |
| 90 | HSEC | HORSECO TRANSPORTATION LTD | | | SCAC4 |
| 91 | HSEF | HANSENS FLOWERS LIMITED | | | SCAC4 |
| 92 | HSEG | HUGGINS & SON | | | SCAC4 |
| 93 | HSEH | HYLAND SEEDS | | | SCAC4 |
| 94 | HSEI | HK SERVICES | | | SCAC4 |
| 95 | HSEL | HOUSES LOADING & SHUTTLE INC | | | SCAC4 |
| 96 | HSEP | HOT SHOT EXPRESS, INC | | | SCAC1 |
| 97 | HSEP | HOT SHOT EXPRESS INC | | | SCAC4 |
| 98 | HSEQ | HERITAGE SERVICES | | | SCAC4 |
| 99 | HSER | HORSE TRANSPORTATION | | | SCAC4 |
| 100 | HSES | H & S ENTERPRISES INC | | | SCAC4 |
