The Pestonjee Bomanjee was a wooden sailing ship built in 1834 by James Lang of Dumbarton, Scotland. She was a three-masted wooden barque of 595 tons, 130 feet in length, 31.5 feet in breadth, first owned by John Miller Jnr and Company, Glasgow. Her last-known registered owner in 1861 was Patrick Keith & George Ross, Calcutta.
The Pestonjee Bomanjee was built for East India service, and undertook a number of journeys between Britain and Australia. In 1838 she undertook a journey from London to South Australia, carrying with her George Gawler who had been appointed as the second governor of South Australia, in succession to Captain John Hindmarsh, who had been recalled. Gawler and his wife, children and gardener, Joseph Whittaker, arrived on the Pestonjee Bomanjee on 12 October 1838, after a four month journey to Adelaide via Tenerife and Rio de Janeiro.
In 1841 her master, Captain Stead, was attacked and murdered by a gang of Chinese villagers in the Chusan Islands.
For the latter part of her service she was used as a convict ship. In 1848 the vessel was felted and its hull sheathed in 'yellow metal' (probably copper or brass) to protect it from damage by marine growths.