Ramari Evelyn Sidonie Oliphant Stewart MNZM is a New Zealand Māori whale expert. Her iwi affiliations are Ngāti Awa, Rongomaiwahine, and Ngāti Mahuta. She was appointed a Member of the New Zealand Order of Merit in the 2020 Queen's Birthday Honours, for services Māori culture and wildlife conservation and research. The newly discovered Ramari's beaked whale is named in her honour. Stewart had assisted in the recovery and preparation of this pregnant female, thought at the time to be a True's beaked whale in 2012.