Hazel Wood Waterman (1865–1948) was an early 20th century American architect working in an Arts and Crafts—inspired style in southern California. She undertook the first major renovation of Estudillo House, which is one of the oldest surviving examples of Spanish architecture in California.

Robert Whitney Waterman was an American politician. He served as the 17th governor of California from September 12, 1887, until January 8, 1891.