Passenger railroads
Skyline (first segment opened on June 30, 2023)
Heritage and Scenic Railroads
Hawaiian Railway Society
Kauai Plantation Railway
Lahaina, Kaanapali and Pacific Railroad
Defunct railroads
Ahukini Terminal and Railway Company
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
Industrial Rail Operations
Island of Hawaii
Hamakua Mill 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
Island of Kauai
Grove Farm Company
Hawaiian Sugar Company
Kekaha Sugar Company
Kilauea Sugar Plantation Company
Koloa Sugar Company
The Lihue Plantation Company
Hanamauku Sugar Plantation
Ahukini Terminal and Railway Company (absorbed by the Lihue Plantation) McBryde Sugar Company Eleele Plantation Kauai Railway Company (McBryde Sugar Company sponsored) Waimea Sugar Mill Company
Island of Lanai
Maunalei Sugar Company
Island of Maui
Hawaiian Commercial & Sugar 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
Island of Molokai
American Sugar Company
Island of Oahu
Ewa Plantation 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
References
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
