El Campo Santo (Spanish for "The Holy Field") is a cemetery located at the Workman and Temple Family Homestead Museum, 15415 East Don Julian Road, in City of Industry, California.

Along with a cemetery plot enclosed by an ornate cast-iron fence, they built a Gothic Revival brick chapel dedicated to Saint Nicholas by Bishop Thaddeus Amat of Los Angeles.

Walter P. Temple, a grandson of the Workmans, successfully filed a lawsuit preventing any further desecration of the cemetery.

In place of the chapel, however, he built a cast stone Neoclassical mausoleum and moved the remains of his family inside.

El Campo Santo is open to visitors through a self-guided tour described in the free brochure available at the museum office.