Old San Francisco is a 1927 American synchronized sound historical drama film starring Dolores Costello and featuring Warner Oland.

Buckwell, eager to possess the land of Don Hernandez Vasquez, sends Michael Brandon, an unscrupulous attorney, to make an offer.

Terry tries to save the Vasquez land grants, but when Chris causes the grandee's death, Dolores takes an oath to avenge her father.

Learning that Chris is half Chinese, Dolores induces his feeble-minded dwarf brother to denounce him; he captures her and Terry, but they are saved from white slavery by the great earthquake of 1906 that kills the villain.

"[4] A slightly later reviewer wondered cynically why it had not been censored: "Just as the villain is giving thanks to Buddha, the San Francisco earthquake intervenes to save [Dolores and Terry], thus explaining a catastrophe that cost many lives.