The Oahu Railway had a variety of locomotive types and configurations from all three major US builders – Baldwin, ALCO and Lima. Many of the them were relatively heavy for a narrow-gauge railroad which reflected the long trains and steep grades on Oahu. These included the outside-frame 2-8-0’s and 2-8-2’s and the three-truck Shays.
Locomotive 6- Locomotive 9
- Locomotive 10
- Locomotive 12
- Locomotive 15 – Steam
- Locomotive 19 — Diesel
- Locomotive 19 — Steam
- Locomotive 22
- Locomotive 31
- Locomotive 32
- Locomotive 34
- Locomotive 35
- Locomotive 36
- Locomotive 37
- Locomotive 39
- Locomotive 43
- Locomotive 44
- Locomotive 45 — Steam
- Locomotive 57
- Locomotive 60
- Locomotive 64
- Locomotive 70
- Locomotive 76
- Locomotive 80
- Locomotive 85
- Locomotive 87
- Locomotive 88
- Locomotive 90
- Locomotive 98
- Locomotive 111
- Motorcars
