Samuel Grimes was a politician in Queensland, Australia. He was a Member of the Queensland Legislative Assembly and represented the Electorate of Oxley from 3 December 1878 to 18 June 1902 when he died in office. He died of pneumonia after a short illness. Samuel was born on 13 August 1837 at Ashby-de-a-Zouch, Leicestershire, England, and arrived in Queensland on the ship Chaseley in 1849. He was involved in farming in a number of areas around Moreton Bay from 1857 and was responsible for developing a sugar plantation on Hope Island in the Coomera River.