Donaldina Cameron (July 26, 1869 – January 4, 1968) was a pioneer in the fight against slavery as a Presbyterian missionary in San Francisco's Chinatown, who helped more than 2,000 Chinese immigrant girls and women escape from forced prostitution and indentured servitude.
She was known as "Fahn Quai," or the “White Devil” of Chinatown, as well as the "Angry Angel of Chinatown."