Gattung has been involved with a number of not-for-profit and philanthropic interests, including being co-founder and trustee of the World Women Charitable Trust, the Eva Doucas Charitable Trust, Patron of the Cambodia Charitable Trust and Chair of the Wellington Board of the Society for the Prevention of Cruelty to Animals (SPCA). She is NZ Lead for SheEO, a radically redesigned ecosystem that supports, finances, and celebrates female innovators. The Arts Foundation of New Zealand partnered with Gattung in 2019 to add a $25,000 Arts Laureate prize of the Theresa Gattung Female Arts Practitioners Award.