Leslie Ann Landon (born October 11, 1962, in Los Angeles) is a former American actress who now works as a psychologist. She is one of seven children of Michael Landon and one of four children from his marriage to actress Lynn Noe. Her siblings from this marriage are Michael Jr., Christopher, and Shawna Landon. As a teenager, Leslie Landon appeared on screen alongside her father in the series Little House on the Prairie (1975). She initially took on several minor roles before assuming the permanent role of teacher Etta Plum in 1982. Despite her acting experience, she decided to pursue a degree at the University of Southern California. Today, she holds a doctorate in psychology and works as a family therapist. Leslie Landon has been married since 1990 and has four children, including actress Rachel Matthews.