Houlder Line was a number of related British Shipping companies originally established by the Houlder brothers.
Houlder Brothers & Co. was formed in London 1856 and operated in the market for chartered tonnage. In 1861 the company acquired the Golden Horn, which they used on the North Atlantic routes to the United States. The company later expanded to service routes to New Zealand, Australia and the Pacific Islands. From 1875 to 1880 the company worked with John T. Arundel & Co. in a guano mining business on Flint Island in the Pacific Ocean. In 1881 the company entered the passenger and cargo trade to the River Plate.
Many Houlder ships were recognisable by having names ending in Grange. The group re-used some of these names three or more times on successive ships: Beacon Grange, Elstree Grange, Langton Grange, Oswestry Grange, Ovingdean Grange and Royston Grange.
The Furness-Houlder Argentine Line was a joint venture between Houlder Brothers Ltd and the Furness Withy shipping company, established in 1914.
In 1987 Houlder Line ceased operations. The company continues as the independent engineering consultancy Houlder Ltd.