YMCA, sometimes regionally called the Y, is a worldwide youth organization based in Geneva, Switzerland, with more than 64 million beneficiaries in 120 countries. It was founded in London on 6 June 1844 by George Williams as the Young Men's Christian Association. The organization aims to put Christian values into practice by developing a healthy body, mind, and spirit.

The World Student Christian Federation (WSCF) is a federation of autonomous national Student Christian Movements (SCM) forming the youth and student arm of the global ecumenical movement. The Federation includes Orthodox, Protestant and Catholic students.