| 1 | MTX | Multi Taxi, S.A. de C.V. | Callsign: Multitaxi, | MEX | AVCODES |
| 2 | MTX | Multi Taxi | | | ICAO1 |
| 3 | MTX | Tomahawk Ry., Limited Partnership | eliminated 4/1993 | | NAKINA |
| 4 | MTX | North American Car Corp. | added 7/1955; eliminated 10/1957; added 1/1958; eliminated 7/1959 | | NAKINA |
| 5 | MTX | Mather Stock Car Co. | added 7/1954; 7/1954; eliminated 7/1955 | | NAKINA |
| 6 | MTX | Morrell Tank Line | eliminated 7/1954 | | NAKINA |
| 7 | MTX | Morrell Tank Line (T.H. Foster, Trustee) | 7/1937-1/1952 | | NAKINA |
| 8 | MTX | Morrell Tank Line (Morrell Refrigerator Car Co.) | 7/1930-7/1935 | | NAKINA |
| 9 | MTX | Morrell Tank Line (Morrell Refrigerator Line) | 8/1920-7/1923 | | NAKINA |
| 10 | MTX | Morrell Tank Line (Morrell Refrigerator Car Co.) | Apr-38 | | NRHS |
| 11 | MTX | Morrell Tank Line (T.H. Foster, Trustee) | Jan-52 | | NRHS |
| 12 | MTX | Mather Stock Car Co. | eliminated 7/55 | | NRHS |
| 13 | MTX | North American Car Corp. | added 7/55; eliminated 10/57; added 1/58; eliminated 7/59 | | NRHS |
| 14 | MTX | Tomahawk Ry., Limited Partnership | eliminated 4/93 | | NRHS |
| 15 | MTX | *MORRELL TANK LINE [JOHN MORRELL & CO.] (NCCo [MATHER STOCK CAR CO.]) | | | PWRC |
| 16 | MTX | *TOMAHAWK RAILWAY, LP | | | PWRC |
| 17 | MTXA | MEGA-TEX XPRESS | | | SCAC4 |
| 18 | MTXB | MTS EXPRESS LLC | | | SCAC4 |
| 19 | MTXD | MATTS EXPRESS (1990) LTD | | | SCAC4 |
| 20 | MTXF | MURILLO TRAILER EXPRESS | | | SCAC4 |
| 21 | MTXG | MATRIX LOGISTICS INC | | | SCAC4 |
| 22 | MTXI | MERITEX TRANSPORT INTERNATIONAL INC | | | SCAC4 |
| 23 | MTXK | MANTRA TRUCKING INC. | | | SCAC4 |
| 24 | MTXL | MAQUILAS TEXTILES CARNERO S A DE C | | | SCAC4 |
| 25 | MTXM | MAURERS TAXIDERMY | | | SCAC4 |
| 26 | MTXN | MATRIX TRANSPORT INC | | | SCAC4 |
| 27 | MTXP | MILLER TRUCKING LTD | | | SCAC4 |
| 28 | MTXQ | MAGANN TEXAS LLC | | | SCAC4 |
| 29 | MTXR | MOTEX TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 30 | MTXRO | METROREX SA | | RO | VKM |
| 31 | MTXS | MINN-TEX EXPRESS INC | | | SCAC4 |
| 32 | MTXT | MOTRUX INC | | | SCAC4 |
