The Sarawak State Museum (Malay: Muzium Negeri Sarawak) is the oldest museum in Borneo. It was founded in 1888 and opened in 1891 in a purpose-built building in Kuching, Sarawak. It has been said that naturalist Alfred Russel Wallace encouraged Charles Brooke, the second White Rajah of Sarawak, to establish the museum : there is no evidence for this (Wallace, although he did return to England with Charles (Johnson) in 1862, supported his elder brother, Brooke, when he was disinherited in 1863, so is unlikely to have retained any links).
Starting 23 October 2017, the museum is temporarily closed until 2020 for an RM308-million refurbishment works. Only RM28M will be spent on the historic museum building with the rest to be spent on a far larger new museum campus building nearby. Once it is reopened, the museum aims to be one of the finest museums in ASEAN.