| 1 | SNH | Sunshine Air (PVT) Ltd. | Callsign: Sunlink, | CL | AVCODES |
| 2 | SNH | Sunshine Express Airlines Pty. Ltd. d/b/a Sunshine Express Airline | IATA: CQ, ICAO Designator changed to EXL | AUS | AVCODES |
| 3 | SNH | Senair Services | | | ICAO1 |
| 4 | SNHA | SAIN & HEAVNER TRUCKING CO INC | | | SCAC4 |
| 5 | SNHB | SOONEST EXPRESS INC | | | SCAC4 |
| 6 | SNHC | SHANAHAN TRANSPORTATION INC | | | SCAC4 |
| 7 | SNHD | S N H TRANSPORT | | | SCAC4 |
| 8 | SNHE | SIMMONS HEALTHCARE | | | SCAC4 |
| 9 | SNHG | S. AND H. TRUCKING CO | | | SCAC1 |
| 10 | SNHI | SONANGOL SHIPPING HOLDING LIMITED | | | SCAC4 |
| 11 | SNHJ | SEARSON, HARRY J LTD | | | SCAC4 |
| 12 | SNHL | S & H TRUCKING CO | | | SCAC4 |
| 13 | SNHM | SANCHEZ MENDEZ, ALFREDO | | | SCAC4 |
| 14 | SNHN | SCAN-SHIPPING INC | | | SCAC4 |
| 15 | SNHO | SIENA HOME BOUTIQUE | | | SCAC4 |
| 16 | SNHR | SPINNER, H R CORP | | | SCAC4 |
| 17 | SNHS | STEAMTOWN NATIONAL HISTORIC SITE | | | PWRC |
| 18 | SNHT | SPERIAN HEARING PROTECTION LLC | | | SCAC4 |
| 19 | SNHU | SINOTRANS CONTAINER LINES CO.,LTD. | | PRC | BIC |
| 20 | SNHU | SINOTRANS CONTAINER LINES CO LTD | | | SCAC4 |
| 21 | SNHW | SANTE SHIPPING | | | SCAC4 |
| 22 | SNHX | Shell Chemical Corp. | added 4/1956; 10/1957; eliminated 4/1960 | | NAKINA |
| 23 | SNHX | Shell Chemical Co., a Division of Shell Oil Co. | added 4/1960; 4/1961-10/1966; eliminated 7/1969 | | NAKINA |
| 24 | SNHX | Shell Oil Co. | added 7/1969; 4/1970-1/1980; eliminated 1/1983 | | NAKINA |
| 25 | SNHX | IND/AG Chemicals, Inc. | added 1/1983; 1/1994-7/2005; eliminated 4/2006 | | NAKINA |
| 26 | SNHX | Shell Chemical Corp. | Oct-57 | | NRHS |
| 27 | SNHX | Shell Chemical Co., a Division of Shell Oil Co. | 4/61-10/66; eliminated 7/69 | | NRHS |
| 28 | SNHX | Shell Oil Co. | added 7/69; 4/70-1/80; eliminated 1/83 | | NRHS |
| 29 | SNHX | IND/AG Chemicals, Inc. | added 1/83; 1/94-7/2000 | | NRHS |
| 30 | SNHX | IND/AG CHEMICALS, INC. [SHELL OIL CO.; SHELL CHEMICAL CORP.] | | | PWRC |
| 31 | SNHX | IND/AG Chemicals | | | RSRV |
| 32 | SNHY | STONEHOUSE POTTERY | | | SCAC4 |
