Steam Navigation Company
- Atlantic Steam Navigation Company
- Australasian Steam Navigation Company
- Australian United Steam Navigation Company
- Barrow Steam Navigation Company
- Belfast
- Bombay
- Bombay Coast and River Steam Navigation Company
- Bombay Steam Navigation Company
- Bristol
- Bristol General Steam Navigation Company
- British India Steam Navigation Company
- British and American Steam Navigation Company
- Calcutta
- Calcutta and Burmah Steam Navigation Company
- California Steam Navigation Company
- Castletown Steam Navigation Company
- China Merchants' Steam Navigation Company
- Cornwall
- Cunard Line
- Fleetwood
- General Steam Navigation Company
- General Steam Navigation Company of Greece
- Illawarra Steam Navigation Company
- Indo-China Steam Navigation Company Ltd.
- Inter-Island Steam Navigation Company
- Isles of Scilly
- Jardine
- Konkan coast
- Midland Railway
- North Coast Steam Navigation Company
- North Lancashire Steam Navigation Company
- NorthLink Ferries
- Ocean Steam Navigation Company
- Oregon Steam Navigation Company
- Orient Steam Navigation Company
- Pacific Steam Navigation Company
- Peninsular and Oriental Steam Navigation Company
- Rangoon
- Republic of Ireland
- River Murray Steam Navigation Company
- Russian Steam Navigation and Trading Company
- SS Great Eastern
- SS Trondhjemsfjord (1911)
- Scilly Isles Steam Navigation Company
- Scindia Steam Navigation Company Ltd.
- Shri Ambica Steam Navigation Company
- Southern Pacific Company
- Steamboats of the Colorado River
- Swadeshi Steam Navigation Company
- Tasmanian Steam Navigation Company
- Ullswater
- Ullswater Steam Navigation Company
- White Star Line
- Willamette River
- Willamette Steam Navigation Company