Henry Dangar (1796 - 1861) was a surveyor and explorer of Australia in the early period of British colonisation. He became a successful pastoralist and businessman, and also served as a magistrate and politician. He was born on 18 November 1796 at St Neot, Cornwall, United Kingdom, and was the first of six brothers to emigrate as free settlers to New South Wales.
Soon after arrival in the Jessie on 2 April 1821 he was appointed assistant government surveyor under John Oxley, and employed in the counties of Camden and Argyle. He remained in this position until 1827, surveying among other places, the township of Newcastle. Cornish place names, scattered through the Hunter Region, mark Henry Dangar's surveys and record his deep affection for his birthplace. Mount Dangar, Dangarfield, Dangar Falls, and Dangarsleigh commemorate his name.
He received two grants of land for his services as a surveyor - 300 acres (121 ha) named 'Neotsfield' and 700 acres (283 ha) near Morpeth, known as 'Baroona'. He returned to England in 1828 leaving his estates in the hands of his brother William, and when he returned to Australia his new wife Grace Sibly accompanied him. After his return he was granted land at Kingdon Ponds, and in the Port Stephens area he completed survey work for the Australian Agricultural Company until 1833.
In 1848 Henry Dangar together with his brothers Richard and William began a meat canning factory at Honeysuckle Point, Newcastle. The Newcastle Meat Preserving Company had been established after a severe drought caused a decline in cattle and sheep prices. Although the business won awards at the Great Exhibition of 1851 in London, and exported their product to India and California, the company had ceased to operate by 1855.