List of reporting marks: X
- v
- t
- e
List of North American reporting marks
- A
- B
- C
- D
- E
- F
- G
- H
- I
- J
- K
- L
- M
- N
- O
- P
- Q
- R
- S
- T
- U
- V
- W
- X
- Y
- Z
Note: Marks ending in U are for container owners; marks ending in X are not common carriers; marks ending in Z are for trailers without flanged wheels. All other marks are of common-carrier railroads.
X
- XCLX - Xcel Energy
- XCWZ - Union Pacific Railroad
- XFEZ - Florida East Coast Railway
- XNWZ - Norfolk Southern Railway
- XOMX - Exxon-Mobil Corporation
- XRFZ - CSX Transportation
- XSCZ - CSX Transportation
- XSLZ - Soo Line Railroad
- XTRX - XTRA, Inc.; First Union Rail
- XTTX - Trailer Train Company