Abstract: This article overviews the use of hyperbaric oxygen treatment in New Zealand primarily for chronic wounds, those who have had radiation therapy and those who are having or who have had head and neck surgery. In New Zealand there are just three hyperbaric oxygen treatment units: The Devonport Naval Base and The Oxygen Therapy Clinic, both in Auckland; and the Hyperbaric Medicine Unit in Christchurch; thus access to this treatment is limited.