• (1′B)B locomotives‎ (2 C)
• (1′B)B n4v locomotives‎ (1 C, 1 P)
• (1′B)B n4vt locomotives‎ (2 P)
• B′B locomotives‎ (2 C)
• B′B n4vt locomotives‎ (6 P)
• B′B1′ locomotives‎ (1 C)
• B′B1′ n4vt locomotives‎ (1 P)
• B′B n4v locomotives‎ (1 C, 2 P)
• C′C locomotives‎ (3 C)
• C′C h4v locomotives‎ (1 C)
• C′C h4vt locomotives‎ (1 P)
• C′C t locomotives‎ (1 C)
• (C1′)+(1′C) locomotives‎ (1 P)
• D′D h4v locomotives‎ (1 C)
• D′D h4vt locomotives‎ (3 P)
• D′D locomotives‎ (3 C)
• D′D t locomotives‎ (1 C)

0–9

• 0-4-4-0T locomotives‎ (14 P)
• 2-4-4-0T locomotives‎ (3 P)

E

• Engerth locomotives‎ (3 P)

F

• Fairlie locomotives‎ (11 P)

G

• Garratt locomotives‎ (77 P)

M

• Mallet locomotives‎ (18 C, 34 P)
• Meyer locomotives‎ (6 P)

S

• Simple articulated locomotives‎ (23 P)

0–9

• 0-4-4-0
• 2-6-6-0T
• 2-8-8-8-2
• 2-8-8-8-8-2
• 0-4-4-0T
• 2-4-4-0T
• 0-6-6-0T

A

• Articulated locomotive

B

• BNR class N

C

• CIÉ No. CC1
• Climax locomotive

D

• Du Bousquet locomotive

E

• Engerth locomotive

F

• Fairlie locomotive

G

• Gölsdorf axle
• Golwé locomotive

H

• Heisler locomotive

K

• Kitson-Meyer
• Klien-Lindner axle

M

• Mallet locomotive
• Mason Bogie locomotive
• Meyer locomotive

N

• NZR B class (1874)

P

• Péchot-Bourdon locomotive

S

• Shay locomotive
• SR Leader class

U

• Union Pacific 4005

W

• Welshpool and Llanfair Light Railway steam locomotive number 19