Gibault Catholic High School is a private, Roman Catholic high school in Waterloo, Illinois.

It is part of the Roman Catholic Diocese of Belleville.

[5] In 2023, the Boys Basketball team won its first state championship, defeating Scales Mound for the Class 1A State Title.

Later, they would go on to defeat Henry-Senachwine and secure the Class 1A State Title in 2023 as well, winning 8-0.

[7] Gibault won three consecutive state championships in soccer between 2005 and 2007.