Oahu Island Railway

The Oahu Island Railway (reporting mark OIRW) is a Class II railroad running on island in, linking  to several ports and resort villages. It is owned by and was built in the mid-1960s as a joint-venture between the  and  that helped service. The railroad was purchased by Genesee & Wyoming from local investors in 2000.

It carries both freight and passengers throughout its system. In terms of freight, it primarily hauls intermodal containers and agricultural products.

Rolling stock
The Oahu Island Railway's locomotive power is mostly second-hand locomotives from the U.S. mainland. The current locomotive numbering scheme begins with 1922, to honor the date the "Gathering Place" nickname for Oahu was first recorded. The railway has shops for the maintenance and repair of it's locomotives in and.

The railway has a fleet of 15 historic passenger cars in service, including OIRW #45, a vintage dome car originally built for the  that later served with, and OIRW #41, a vintage dining car originally built for the  in 1938. The rest are newer coaches built by.