| 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.