HMNZS Manawanui can refer to

– the first diving tender of the New Zealand navy from 1953 to 1978 HMNZDT Manawanui (1978) – the second diving tender, renamed as in 1988 – diving tender commissioned in 1988, decommissioned in 2018 – hydrographic and diving support vessel commissioned in 2019 and sunk in 2024