| 1 | CSI | Central Skyport, Inc. | Callsign: Skyport, | USA | AVCODES |
| 2 | CSI | Capital Aviaition Services, Inc. | Callsign: Casi, | USA | AVCODES |
| 3 | CSI | CSI Aviation, Inc. | Callsign: Pinon, ICAO Callsign changed to Sandia. | USA | AVCODES |
| 4 | CSI | CSI Aviation, Inc. | Callsign: Sandia, ICAO Callsign changed from Pinon. | USA | AVCODES |
| 5 | CSI | Central Skyport | | | ICAO1 |
| 6 | CSI | CHAPIN & SADLER INC | | | SCAC4 |
| 7 | CSIA | CUISINES INTERNATIONALES | | | SCAC4 |
| 8 | CSIB | CSI TRANSPORT | | | SCAC3 |
| 9 | CSIB | CRUZ SOLIS, PATRICIA | | | SCAC4 |
| 10 | CSIC | CONTAINER SERVICES INT'L, INC. | | | SCAC3 |
| 11 | CSIE | CHRISTIES MESSENGER SERVICE INC | | | SCAC3 |
| 12 | CSIE | COURT STREET OFFICE SUPPLIES | | | SCAC4 |
| 13 | CSIF | C S TRANSIT INC | | | SCAC3 |
| 14 | CSIG | CHARACTER SHIPPING COMPANY LIMITED, | | | SCAC3 |
| 15 | CSIH | CLASSIC HORSE TRANSPORTATION | | | SCAC3 |
| 16 | CSIH | CONTINENTAL SERVICES INC | | | SCAC4 |
| 17 | CSIJ | CCS IMPORTS INC | | | SCAC3 |
| 18 | CSIJ | CYCLE SEARCH INTERNATIONAL INC | | | SCAC4 |
| 19 | CSIL | CASILE, SALVATORE | | | SCAC3 |
| 20 | CSIN | CONSOLIDATED SHIPPERS INC | | | SCAC3 |
| 21 | CSIO | CSI INC | | | SCAC3 |
| 22 | CSIP | C S TRANSPORT INC | | | SCAC3 |
| 23 | CSIQ | COASTAL TRANSPORT INC | | | SCAC3 |
| 24 | CSIR | CONSANI TRUCKING | | | SCAC3 |
| 25 | CSIT | C S I TRUCKING INC | | | SCAC3 |
| 26 | CSIU | CSI GROUP LLC | | USA | BIC |
| 27 | CSIU | CSI Group | | | RSRV |
| 28 | CSIU | CARRIER SYSTEMS, INC. | | | SCAC3 |
| 29 | CSIV | CUSTOMER SERVICE TRUCKING CO INC | | | SCAC3 |
| 30 | CSIW | COASTAL TRANSPORTATION INC | | | SCAC3 |
| 31 | CSIX | Circle Systems, Inc. | 7/2005 | | NAKINA |
| 32 | CSIX | Cook Swan Oil Corp. | 7/1930-7/1932 | | NAKINA |
| 33 | CSIX | Cook & Swan Co., Inc. | 8/1920-7/1923 | | NAKINA |
| 34 | CSIX | *COOK SWAN OIL CORP. [COOK & SWAN CO.] | | | PWRC |
| 35 | CSIX | +CYCLE SYSTEMS, INC. | | | PWRC |
| 36 | CSIY | CLASSIC TRANSPORTATION INC | | | SCAC3 |
| 37 | CSIZ | CENTRAL SILICA | | | PWRC |
