| Intro | American educational psychologist and psychometrician. |
| Was | Psychologist |
| From | United States of America |
| Type | Healthcare |
| Gender | male |
| Birth | 1896 |
| Death |
1965 (aged 69 years) |
Marion Webster Richardson (1896–1965) was an American educational psychologist and psychometrician. He was a founder of the Psychometric Society and a founder and editor of Psychometrika. He was a co-developer of the Kuder–Richardson Formula 20.