HMS Assistance was an Arctic discovery barque of the Royal Navy, and the sixth vessel to carry the name. She began in 1834 as the India-built merchant vessel Acorn. Her name was changed to Baboo. Under that name she transported contract labourers between Mauritius and India, and immigrants to South Australia. The Royal Navy purchased her in 1850 and named her HMS Assistance. Assistance participated in two Arctic expeditions before her crew abandoned her in the ice in 1854.