Dewan Tun Abdul Razak is another gallery of Sarawak Museum. It was named after the Second Prime Minister of Malaysia. It has two floors and was previously used as a Legislative Assembly Hall from the year 1973 to the year 1975. In 1982 it was converted into a museum exhibition gallery and was officially opened in 1983.

          The ground floor has been converted into a temporary exhibition hall. This floor also accommodates the Museum Shoppe, which sells a wide variety of perfect souvenirs ranging from traditional arts materials, as well as T-shirts, books and more.

          The first floor is housing two temporary exhibitions which displayed mostly items related to pre-historical era, such as the colorful jars, brasswares, Chinese furniture, longhouse gallery and others. Substantial amount of archaeological materials excavated in Sarawak is also being displayed on this floor.