Kam Dip Chin, also known as Marie Chin, was 69 when she died after an arson fire broke out early on June 13, 1980, at the Hamilton Hotel in Portland, Oregon. The blaze was set deliberately on the third-floor stairwell; investigators found accelerant had been used. Firefighters located Chin in her room; she was rushed to hospital but pronounced dead shortly after arrival, with smoke inhalation and asphyxiation listed as the cause.

Chin had been a long-time resident of the historic downtown hotel and had retired after managing another hotel. Despite an arson investigation, the person or persons who set the fire have not been identified and the case remains unsolved.

Anyone who lived at the Hamilton Hotel at that time or who has information about the fire or potential suspects is asked to come forward.