Frank Colton Havens (November 21, 1848 – February 9, 1918) was a real estate and water developer in the San Francisco Bay Area.

He worked for the Savings and Loan Society in San Francisco, then founded a stock brokerage firm in partnership with Van Dyke Hubbard in about 1880.

He subsequently organized several insurance and investment firms before founding the Oakland-based Realty Syndicate in 1895 with F. M. ("Borax") Smith.

He built the four-story Havens Mansion in Piedmont on Wildwood Gardens, designed by architect Bernard Maybeck with interior by Louis Comfort Tiffany.

The scheme was supposed to make Havens a fortune, but although eucalyptus grew quickly it made poor lumber.