The lysianassoid amphipod family Aristiidae is reported from Australian waters for the first time. Two new genera and seven new species are described: Aristias eden sp. nov.; A. gomoni sp. nov.; A. nowra sp. nov.; A. otway sp. nov.; A. poorei sp. nov.; Memana sarda gen. nov., sp. nov.; and Pratinas ludmilla gen. nov. sp. nov.