| 1 | UCC | Uganda Air Cargo | Callsign: Uganda Cargo, | EAU | AVCODES |
| 2 | UCC | Uganda Air Cargo | | | ICAO1 |
| 3 | UCC | UNION CARBIDE CORPORATION, CARBON PRODUCTS DIV. | | | PWRC |
| 4 | UCCB | US CARRIERS CORP | | | SCAC4 |
| 5 | UCCE | ULTIMATE CONTAINER CARRIER | | | SCAC4 |
| 6 | UCCP | US CARGO CORP | | | SCAC4 |
| 7 | UCCS | UPPER COLUMBIA CONFERENCE SDA | | | SCAC4 |
| 8 | UCCU | AMERICAN CYANAMID | | | PWRC |
| 9 | UCCU | American Cyanamid | | | RSRV |
| 10 | UCCX | Utah Copper Corp. | 7/1937 (not listed) | | NAKINA |
| 11 | UCCX | United Contracting Co. | 4/1947-4/1961 (not listed) | | NAKINA |
| 12 | UCCX | Union Carbide Canada Ltd. | added 10/1969; 4/1970-1/1980; eliminated 1/1985; 1/1994-7/2005 (not listed) | | NAKINA |
| 13 | UCCX | United Contracting Co. | 1/52-4/61 | | NRHS |
| 14 | UCCX | Union Carbide Canada Ltd. | added 10/69; 4/70-1/80; eliminated 1/85; 1/94-7/2000 | | NRHS |
| 15 | UCCX | *UTAH COPPER CORP. | | | PWRC |
| 16 | UCCX | *UNITED CONTRACTING CO. | | | PWRC |
| 17 | UCCX | +UNION CARBIDE CANADA, LTD. | | | PWRC |
| 18 | UCCX | Union Carbide Canada | | | RSRV |
| 19 | UCCX | UNION CARBIDE CORP. OF CANADA | | | SCAC4 |
| 20 | UCCZ | UNION CAMP CORP. | | | PWRC |
