Huddart Parker Ltd was an Australian shipping company trading in various forms between 1876 and 1961. It was one of the seven major coastal shippers in Australia at a time when shipping was the principal means of interstate and trans-Tasman transport. The company started in Geelong, but in 1890 shifted its offices to Melbourne. By 1910 Huddart Parker had grown to rank 24th of the top 100 companies in Australia by asset value. Several of the company's ships served in World War I and World War II. Huddart Parker ceased to be an independent company in 1961, when it was taken over by Bitumen and Oil Refineries Australia Limited.
The company was founded on 1 August 1876 in Geelong as Huddart, Parker & Co. Pty. Ltd, by James Huddart, T.J. Parker, John. Traill, and Captain T. Webb. Earlier, in the 1850s, James Huddart's uncle, Captain Peter Huddart had made his fortune importing coal for use in the Victorian goldfields. He was the first major operator handling coal from the port of Geelong. Parker was a merchant who arrived in Geelong from London in 1853. The trading activities each built up through the gold-rush era and beyond led to a linking of the businesses of their descendants and successors, to become Huddart Parker & Company.
After 1876 Huddart Parker expanded rapidly. By 1886 it had inaugurated the Melbourne–Adelaide shipping service and in 1882 entered the Sydney–Melbourne trade. During the early 1890s its steamers were running to the principal ports of New South Wales, Victoria, South Australia, Western Australia and Tasmania, and in 1893 it was also trading with ports in New Zealand.
From 1889 there was a three-way competition between the Union Steam Ship Company of New Zealand, Huddart Parker and the Tasmanian Steam Navigation Company (TSNCo) on the Tasmanian routes (Melbourne–Launceston, Hobart–Melbourne and Hobart–Sydney). The TSNCo did not have other routes to absorb their Tasmanian losses, and was bought out by the USSCo in 1891. The rivalry between the USSCo and Huddart Parker lasted to 1895 despite an earlier agreement in 1893. There was undercutting by cheap fares and steamers shadowing each other from port to port. The USSCo Rotomahana and Mararoa would sail alongside the Miowra and Warrimoo, with other ships such as Te Anau and Manapouri sailing before and after thus bracketing the Huddart Parker ships. The 1895 agreement between the two lines pooled the Auckland – Sydney profits and losses; the Melbourne – Launceston profits were divided 4⁄7 to the USSCo and 3⁄7 to Huddart Parker; and the Sydney–Hobart passenger trade was excluded but the cargo and stock trade was divided 2⁄3 to USSCo and 1⁄3 to Huddart Parker.