Mountcastle & Sons is an Australian hat manufacturer. The company is associated with bush hats made of rabbit fur felt with wide brims that are worn in rural Australia.^[3]

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Statesman Hats is owned by Mountcastle Statesman and was established in 1972 in Western Australia. It and was bought by Mountcastle in 1995.^[4]

Trutex, an independent school uniform brand, is owned by Mountcastle.^[5]

In 2019 Mountcastle acquired LW Reid.^[6][7]