Honolulu Rail Transit (opening 2018)
Kauai Plantation Railway
Lahaina, Kaanapali and Pacific Railroad
Hawaii Railway
Hawaii Consolidated Railway
Hawaiian Railroad
Hilo Railroad
Kahului Railroad
Kauai Railway
Koolau Railway
Oahu Railway and Land Company
West Hawaii Railway
Electric
Honolulu Rapid Transit and Land Company
Kukaiau Plantation Company
Hawaii Agricultural Company
Honokaa Sugar Company
Pacific Sugar Mill Company
Hutchinson Sugar Plantation Company
Kaiwiki Sugar Company, Ltd
Kohala Sugar Company
Kona Sugar Company
Olaa Sugar Company
Puna Sugar Company
Hawaiian Mahogany Lumber Company
Laupahohoe Sugar Company
Paauhau Sugar Plantation Company
Puako Plantation
Waiakea Mill Company
Hawaiian Sugar Company
Kekaha Sugar Company
Kilauea Sugar Plantation Company
Koloa Sugar Company
The Lihue Plantation Company
Hanamauku Sugar Plantation
Ahukini Terminal & Railway Company (absorbed by the Lihue Plantation)
McBryde Sugar Company
Eleele Plantation
Kauai Railway Company (McBryde Sugar Company sponsored)
Waimea Sugar Mill Company
Kihei Plantation Company
Maui Agricultural Company
Paia Plantation
Kaeleku Sugar Company
Hana Plantation Company
Kipahulu Sugar Company
Kaeleku Sugar Company
Pioneer Mill Company
Olowalu Sugar Company
Wailuku Sugar Company
Heeia Agricultural Company
Kahuku Plantation Company
Koolau Railway Company (bought out by Kahuku Plantation Company)
Hibiscus & Heliconia Short Line Railroad
Oahu Sugar Company
Honolulu Plantation Company
Waiahole Water Company
Waialua Agricultural Company
Waianae Sugar Company
Waimanalo Sugar Company
John B. Hungerford, Hawaiian Railroads, 1963. Reseda, California: Hungerford Press
Jesse C. Conde and Gerald M. Best, Sugar Trains, Narrow Gauge Rails of Hawaii, 1973. Fenton, California: Glenwood Publishers