The Rarawai–Kavanagasau Light Railway was a narrow gauge railway in Fiji. It reached long.
Operation.
The railway, with a gauge of was built and operated by the Colonial Sugar Refinery Co.
Train operations started in December 1914 with free, twice-weekly, return passenger train services and weekly public goods trains, which transported pipes for the manganese mines as well as agricultural produce such as potatoes, onions, rice, maize, and other food. Transport of cattle started in the early 1950s. The line branched at Sigatoka to Kulukulu village. 
The section from Batiri to Sigatoka closed on 7 August 2009 due to the significant decline in the production of cane in the Cuvu and Olosara sectors and cane from these areas being transportable by lorry to the Lautoka Mill. 
Rolling stock.
Locomotives.
The Hudswell Clarke 0-6-0 locomotive with works number 972 of 1912 named "Fiji" (Colonial Sugar Refining Co. No. 11) and a Hudswell Clarke 0-4-0ST with works number 1056 of 1914 (Colonial Sugar Refining Co. No. 19) are preserved at Statfold Barn Railway.
Carriages.
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Two second class passenger carriages and a brake van were built in 1914 by Clyde Engineering in Granville, Australia for Rarawai–Kavanagasau Light Railway. One of the carriages is now at the Ferrymead 2ft Railway in a partially disassembled state.