Helen Alathena Parkman Johnson Smith (February 8, 1894 – November 12, 1982) was an American child psychologist.

She was an educator and chief psychologist at the John Tracy Clinic in Los Angeles from 1948 to 1977, working with the parents of deaf children to improve communication and other skills.

[2] Johnson was a teacher in Ohio and worked at her father's bank in Texas as a young woman.

[13] In 1972, Smith received the first Distinguished Alumna Award from the Los Angeles chapter of the Wellesley College Club.

She recovered enough to resume her work, but experienced severe chronic hip pain for her last years.