Ivan Fredericks (1864–1904), known as Russian Jack (Русский Джек), was a goldminer of the Western Australian gold rush in the 1880s. In 1885, while working in the Halls Creek goldmines, he pushed his sick friend in a wheelbarrow 300 km through the Great Sandy Desert to Wyndham, the nearest town with a medical centre. A statue was erected to him in Halls Creek. He is buried in Fremantle Cemetery. While he may not be very well known in Russia, Russian Jack is a famous figure in Western Australia.