Charles F. O'Neall (November 12, 1875 – January 29, 1929) was an American real estate agent and Democratic politician from California.

In 1906 he moved to San Diego, California, where he became a successful real estate agent.

He was president of the San Diego Realty Board during 1911–1913, served as a Fire Commissioner under Mayor John Forward Sr., and was director of the Chamber of Commerce.

He was also active with the Democratic Party, serving as its County Central Committee chairman.

With the support of the business community, defeated Department Store owner George Marston.