Catholic Youth Organization
| Abbreviation | CYO | 
|---|---|
| Formation | 1930 | 
| Founder | Bishop Bernard Sheil | 
| Type | Youth athletics and social service | 
| Region  | Worldwide | 
| Affiliations | Catholic Church | 
Catholic Youth Organization (CYO) is an international Catholic youth movement founded by Bishop Bernard Sheil in Chicago in 1930. It became a major factor in the development of race relations in the US Catholic Church following World War II.