YMCA SCUBA Program (also known as Y-SCUBA) was an underwater diving training program operated by the Young Men’s Christian Association (YMCA) of the USA from 1959 to 2008. It was the first nationally organised underwater diving instruction program offered in the United States of America. The program is now delivered by Scuba Educators International, an organisation founded by a group of former senior YMCA SCUBA instructors in 2008.