- 0-10-0
- 0-12-0
- 0-2-2
- 0-2-2-0
- 0-3-0
- 0-4-0
- 0-4-0+0-4-0
- 0-4-2
- 0-4-4
- 0-4-4-0
- 0-6-0
- 0-6-0+0-6-0
- 0-6-0/Gallery
- 0-6-2
- 0-6-4
- 0-6-6-0
- 0-8-0
- 0-8-2
- 0-8-4
- 0-8-6
- 0-8-8-0
- 0 Series Shinkansen
- 0 Series Shinkansen/Gallery
- 100 Series Shinkansen
- 101 series
- 103 series
- 105 series
- 107 series
- 113 series
- 115 series
- 117 series
- 119 series
- 121 series
- 123 series
- 125 series
- 143 series
- 145 series
- 147 series
- 153 series
- 155 series
- 157 series
- 159 series
- 165 series
- 165 series/Yū Yū Tōkai
- 167 series
- 169 series
- 181 series
- 183 series
- 185 series
- 187 series
- 189 series
- 191 series
- 193 series
- 1943 Frankford Junction train wreck
- 1953 Federal Express Runaway Train Wreck
- 1958 Newark Bay rail accident
- 1990 Back Bay, Massachusetts train collision
- 1992 United States Railroad Strike
- 1995 Fox River Grove bus–train collision
- 1999 Bourbonnais, Illinois, train crash
- 2-10-0
- 2-10-10-2
- 2-10-2
- 2-10-4
- 2-12-0
- 2-12-2
- 2-2-0
- 2-2-2
- 2-2-2-0
- 2-2-4-0
- 2-4-0
- 2-4-2
- 2-4-4-0
- 2-4-4-2
- 2-4-6-2
- 2-6-0
- 2-6-2
- 2-6-4
- 2-6-4-4
- 2-6-6
- 2-6-6-2
- 2-6-6-4
- 2-6-6-6
- 2-6-8-0
- 2-8-0
- 2-8-2
- 2-8-4
- 2-8-6
- 2-8-8-0
- 2-8-8-2
- 2-8-8-4
- 2002 Placentia train collision
- 2003 Melbourne runaway train
- 2004 Sri Lanka tsunami train wreck
- 2005 Glendale train crash
- 2008 Chatsworth train collision
- 2009 Stock
- 200 Series Shinkansen
- 2015 Philadelphia train derailment
- 201 series
- 2022 United States Railroad Strike
- 203 series
- 205 series
- 207 series
- 207 series (JR East)
- 207 series (JR West)
- 209 series
- 20 series
- 211 series
- 213 series
- 215 series
- 221 series
- 223 series
- 225 series
- 227 series
- 251 series
- 253 series
- 255 series
- 2600 series
- 271 series
- 273 series
- 281 series
- 283 series
- 285 series
- 287 series
- 289 series
- 300X
- 300 Series Shinkansen
- 301 series
- 303 series
- 305 series
- 311 series
- 313 series
- 315 series
- 321 series
- 323 series
- 371 series
- 373 series
- 381 series
- 383 series
- 385 series
- 4-10-0
- 4-10-2
- 4-10-4
- 4-2-0
- 4-2-2
- 4-2-2-0
- 4-4-0
- 4-4-2
- 4-4-4
- 4-4-4-4
- 4-4-4-6
- 4-4-6-2
- 4-4-6-4
- 4-6-0
- 4-6-2
- 4-6-4
- 4-6-4-4
- 4-6-4-6
- 4-6-4/Gallery
- 4-6-6-2
- 4-6-6-4
- 4-6-6-4/Gallery
- 4-8-0
- 4-8-2
- 4-8-4
- 4-8-4/Gallery
- 4-8-6
- 4-8-8-2
- 4-8-8-4
- 400 Series Shinkansen
- 40 series
- 413 series
- 415 series
- 417 series
- 419 series
- 42 series
- 443 series
- 457 series
- 470 Railroad Club
- 485 series
- 489 series
- 493 series
- 495 series
- 4D
- 4D/Gallery
- 5000 series
- 500 Series Shinkansen
- 521 series
- 52 series
- 583 series
- 587: The Great Train Robbery
- 587: The Great Train Robbery/Gallery
- 591 series
- 6-4-4-4
- 6-4-4-6
- 6-8-6
- 62 series
- 63 series
- 651 series
- 681 series
- 683 series
- 7000 series
- 700 Series Shinkansen
- 701 series
- 711 series
- 713 series
- 715 series
- 717 series
- 719 series
- 7200 series
- 721 series
- 72 series
- 731 series
- 733 series
- 735 series
- 737 series
- 781 series
- 783 series
- 785 series
- 787 series
- 789 series
- 791 series
- 800 Series Shinkansen
- 80 series
- 811 series
- 813 series
- 815 series
- 817 series
- 821 series
- 87 series
- 883 series
- 885 series
- 901 series
- A-Train
- AAR axle classification
- AAR wheel arrangement
- ABB ALP-44
- ABB ALP-44/Gallery
- ACE 3000
- ACOTRAL MR 100
- ACOTRAL MR 300
- ALCO 241
- ALCO 244
- ALCO 251
- ALCO 300
- ALCO 539T
- ALCO Boxcab
- ALCO Century 415
- ALCO Century 420
- ALCO Century 424
- ALCO Century 425
- ALCO Century 428
- ALCO Century 430
- ALCO Century 620
- ALCO Century 624
- ALCO Century 628
- ALCO Century 630
- ALCO Century 636
- ALCO Century 643DH
- ALCO Century 643DH/Gallery
- ALCO Century 650DH
- ALCO Century 855
- ALCO Century Series locomotives
- ALCO DL-109
- ALCO DL-109/Gallery
- ALCO DL531
- ALCO DL560C
- ALCO Diesel Locomotives
- ALCO FA
- ALCO FA/Gallery
- ALCO HH Series
- ALCO MRS-1
- ALCO PA
- ALCO PA/Gallery
- ALCO RS-1
- ALCO RS-11
- ALCO RS-2
- ALCO RS-3
- ALCO RS-3/Gallery
- ALCO RS-32
- ALCO RSD-1
- ALCO S-1
- ALCO S-1/Gallery
- ALCO S-2
- ALCO S-3
- ALCO S-5
- ALCO S-6
- ALCO SB-8/SSB-9
- ALFA-X
- ANA Big Sneaker Train
- ARHS Newport Railway Museum
- ASEA's Export Electric Locomotives
- ASEA's Export Electric Locomotives/Gallery
- ATAC MA 100
- ATAC MA 200
- ATAC MB 100
- ATAC MC V00
- ATAC S/300
- ATSF 576
- Acadia Coal Company No. 42
- Accidents and incidents on the BNSF Railway
- Accum
- Acela Express
- AdTranz M-4/Gallery
- Advanced Passenger Train
- Advanced Warning System
- Aero-Drive Monorail Express
- Aerotrain
- Aerowagon
- Age of Steam Roundhouse
- AirChime Industries (Nathan-Airchime Industries)
- Air Horn
- Air Hose
- Aizu KiHa 8500 series
- Ak-Sar-Ben Zephyr
- Akron, Canton and Youngstown Railroad
- Alabama, Tennessee and Northern Railroad
- Alabama, Tennessee and Northern Railroad No. 401
- Alabama By-Products No. 4046
- Alabama Great Southern Railroad
- Alabama Power Company No. 40
- Alaculsy Lumber Company No. 3
- Alaculsy Lumber Company No. 3/Gallery
- Alaska Railroad
- Alaska Railroad No. 1050
- Alaska Railroad No. 1051
- Alaska Railroad No. 1076
- Alaska Railroad No. 152
- Alaska Railroad No. 152/Gallery
- Alaska Railroad No. 556
- Alaska Railroad No. 557
- Alaska Railroad No. 560
- Alaska Railroad No. 751
- Albany and Northern Railway
- Alberni Pacific No. 2
- Alberta Railway Museum
- Alco-GE
- Alco RSD-12
- Alerter button
- Alford and Sutton Tramway No. 1
- Alford and Sutton Tramway No. 2
- Algers, Winslow and Western Railway No. 203
- Algers, Winslow and Western Railway No. 204
- Algers, Winslow and Western Railway No. 206