The American Theatre Organ Society (ATOS) is dedicated to the preservation of a unique American art form — the theatre pipe organ and its music. The membership includes musicians, technicians, and enthusiastic listeners — all devoted to the preservation and continued enjoyment of what we believe to be a national treasure.

Organized in 1955, ATOS has grown into an international society of more than 5,000 members. There are over 60 chapters in the United States and foreign countries. Members working at the chapter level are accomplishing the goals of ATOS to preserve, restore, maintain, and promote the theatre pipe organ. Presenting concerts, silent film programs and educational seminars for the general public are but a few of the regularly scheduled chapter activities. ATOS is formed and recognized as a non-profit organization under IRS guidelines 501(c)3.

Another goal of ATOS is to encourage young musicians to become proficient theatre organists. An annual Young Organist Competition is sponsored by ATOS. The winners receive cash awards and the opportunity to perform at the Annual ATOS Convention. In addition, ATOS provides annual scholarships to aspiring young organ students.