Percival "Percy" James Benbough (April 14, 1884 – November 4, 1942) was an American Republican politician from California.

Percy Benbough was born April 14, 1884 near London, England, and came to San Diego when he was four.

In 1931 he was appointed police chief, where he transferred people to break up cliques to help fight corruption then existing in the department.

One of his accomplishments as mayor was helping prepare the city for World War II.

Their son Percy J., Jr., an avid sportsman, was killed in a plane crash on February 20, 1932 at age 25.