Levnet -- Friends of the Theremin
- The oldest theremin forum on the internet. Full archives and subscription form.
- http://www.discoveret.org/mailman/listinfo/levnet

Thereminvox.com
- Articles and interviews about the theremin and other electronic musical instruments, a theremin MP3 library, a theremin web directory and a shop.
- http://www.thereminvox.com

Moog Music
- Owned and operated by Robert Moog, manufactures theremins and other high-quality electronic musical instruments.
- http://www.moogmusic.com/

The Musical Saw and Theremin Page
- Information about theremins and musical saws. History, news, soundfiles, and upcoming performances.
- http://www.theremin-saw.com/

Theremin World
- Theremin information including bands who use them, photos and sound, message boards, where to buy theremins, how to build theremins, and a growing registry of the original RCA models.
- http://www.thereminworld.com/

Theremin.info
- Buy a theremin, music, books, CDs, and a large archive of related materials, including a number of sound files to download.
- http://theremin.info/

Theremin Enthusiasts Club International
- Information about the club and the instrument.
- http://www.he.net/~enternet/teci/teci.html