Diesel locomotives used on the railways of Australia.

NSWGR/SRA/FreightCorp and successors

Commonwealth Railways/Australia National/National Rail

• AN class
• DL class
• BL class
• NR class
• AL class
• BU class
• CK class
• CL class
• DA (900) class
• DE class
• DR class
• EL class
• GM class
• MDH class
• NB class
• NC class
• NJ (1600) class
• NSU class
• NT class

South Australian Railways

Victorian Railways/V/Line/Freight Australia

BHP/AIS and successors

Silverton Tramway

Queensland Rail

Also operates on the Standard Gauge ex V/line G and X class, ex SRA 73, 421, 422, ex AN CLF and CLP class's

Freightlink

• FQ class
• FJ class

CFCLA

• GL class
• RL class
• VL class

See also

• List of locomotives
• List of Western Australian locomotive classes
• List of Victorian locomotive classes
• NSWGR steam locomotive classification
• Queensland Railways steam locomotive classification
• Rail transport in Australia