| 1 | SRB | Serb Air | Callsign: Air Serb, | BIH | AVCODES |
| 2 | SRB | Solar Aviation Co. Ltd. | Callsign: Solar Thai, | T | AVCODES |
| 3 | SRB | Serbian Air Force | Callsign: Serbian Air Force, | SR | AVCODES |
| 4 | SRB | Südburgenländische Regionalbahn | | A | TRAFFIC |
| 5 | SRB | Südburgenländische Regionalbahn | | AT | VKM |
| 6 | SRBA | STAR BULK | | | SCAC4 |
| 7 | SRBA | Serbian Aviation | 1893 - 1918 | SR | TRAFFIC |
| 8 | SRBAF | Serbian Air Force and Air Defence | Ратно ваздухопловство и противваздухопловна одбрана Војске Србије | SR | TRAFFIC |
| 9 | SRBB | STRUBE | | | SCAC4 |
| 10 | SRBD | SEMI RETIRED TRUCKING CO | | | SCAC4 |
| 11 | SRBF | SENATOR SHIPPING COMPANY LIMITED | | | SCAC4 |
| 12 | SRBI | SATURN BROKERAGE INC | | | SCAC4 |
| 13 | SRBJ | SHARBER, J E OIL CO INC | | | SCAC4 |
| 14 | SRBL | S A R TRANSPORTES | | | SCAC4 |
| 15 | SRBM | STRUBLE, ROY TRUCKING INC | | | SCAC4 |
| 16 | SRBP | SIERRA RENTAL AND TRANSPORT COMPANY | | | SCAC4 |
| 17 | SRBQ | SCHNELL RACING STABLE | | | SCAC4 |
| 18 | SRBR | S R F T C BROKERS | | | SCAC4 |
| 19 | SRBS | SUNRIDGE TRANSPORTATION BROKERS | | | SCAC4 |
| 20 | SRBU | LEIDOS | | USA | BIC |
| 21 | SRBU | Leidos | | | RSRV |
| 22 | SRBU | ALBERT REBERS GMBH | | | SCAC3 |
| 23 | SRBW | SHANNON, ROBERT | | | SCAC4 |
