The First Unitarian Universalist Church of San Diego traces its founding to 1873, when Unitarians began meeting in San Diego and dedicated their first church on June 22 of that year, with developer Alonzo Horton and Moses A. Luce among its founders. The congregation maintains its main Hillcrest campus on Front Street along with a South Bay campus in Chula Vista. It is a member of the Unitarian Universalist Association and describes itself as a community of religious free thinkers engaged in social-justice work including climate, sanctuary, and LGBTQ+ advocacy.