The Society for Electro-Acoustic Music in the United States (SEAMUS) is a nonprofit US-based organization founded in 1984 that aims to promote the performance, creation, and research of electro-acoustic music in the United States.

[1] SEAMUS (/ˈʃeɪməs/ SHAY-məs) comprises composers, performers, and teachers of electroacoustic music and is known for its annual conference, which provides a venue for the presentation and performance of electro-acoustic music from around the world.

The U.S. representative to ICEM, Jon Appleton,[6] suggested to composer Barry Schrader the formation of such a chapter in 1983[7] and the inaugural meeting was held at the California Institute of the Arts in November 1984.

Significant supporters have included CalArts, ASCAP, and The Alexander Family Foundation.

[8] The SEAMUS Lifetime Achievement Award (formerly the SEAMUS Award) acknowledges the important contributions of its recipients to the field of electroacoustic music.