Martha Morrison
Name Martha Marie Morrison
Sex Female
Found October 12, 1974
Location Vancouver, Washington
Missing from Portland, Oregon
Identified July 13, 2015
Span 40 years
Age 17
Cause of death Homicide

Martha Marie Morrison was an American teenager found murdered in 1974 after her disappearance in September of the same year. She was identified in 2015. In 2017, blood stain evidence matched Morrison's DNA to an air gun owned by a long-term person of interest in her case.