Olivet Nazarene University
 Olivet Nazarene University (ONU) is a Christian liberal arts university located in the village of Bourbonnais Illinois United States. Named for Olivet Illinois ONU was originally established as a grammar school in east-central Illinois in 1907. It is affiliated with the Church of the Nazarene and is the annual site of the Church's Regional Celebrate Life youth gathering for the Central USA Region. It is one of the largest members of the Council for Christian Colleges and Universities.