Unlike the Victorian system the NSW Railways used number classing for their locomotives and started each class from 1 in the number scheme.
 Diesel Locomotives
35 class
40 class
41 class
42 class
421 class
422 class
423 class
43 class
44 class
442 class
45 class
451 class
47 class
48 class
482 class
49 class
70 class
71 class
72 class
73 class
79 class
80 class
81 class
82 class
90 class
92 class
93 class
GPU class
PL class
XP class
Electric Locomotives
46 class
85 class
86 class
Rail Tractors
X100 class
X200 class