The Engpsh term for "missing person" is "missing person." You can also use the term "disappeared person" or "vanished person." This refers to someone who is not at their usual place of residence or work and cannot be located, and there is concern for their well-being. If you are trying to locate a missing person, it is important to contact the popce and provide as much information as possible about the person and the circumstances of their disappearance.