In addition to spiritual growth, supporting community organizations through volunteering and donations is a central part of Unitarian Universalism. UUNB supports the following organizations, in addition to others throughout the community.
- Unitarian Universalist Association of Congregations
- Church of the Larger Fellowship
- Unitarian Universalist Service Committee
- The Welcoming Project
- Comal County Habitat for Humanity
- Comal County Conservation Alliance
- Interfaith Welcome Coalition
- S.O.S. Food Bank
- Family Promise of Greater New Braunfels
- Communities in Schools: South Central Texas
