Devine, Leif
- A modern music composer that uses medieval melodies and re-mixes them with a digital editor.
- http://www.divinentd.com/leif/

Dolf de Vries Musics
- A musical director of well known musicals, shows and "Prom Concerts". Composes and arranges music and is conductor for concerts and performances.
- http://www.dolfdevriesmusics.nl/

De Stijl Music
- Specializes in composition, arrangements, and music production for film, TV, advertising, media.
- http://www.destijlmusic.com/

Dixon, Olivia
- Composes, arranges and produces music for film, TV and New Media. Specializes in soundtracks (film, drama, documentary, animation and advertisements) and arrangement/ orchestration (small-scale string through 60-piece orchestra arrangements).
- http://www.oliviadixon.co.uk/

Dallwitz, Burkhard
- Information about this award-winning composer. Includes a biography, discography, gallery, and links.
- http://www.burkharddallwitz.com.au/

Daniel3
- Trey Daniel is a singer, songwriter and composer, featuring Pop/Rock, Classical, Jazz, Blues, Country and film music on demand.
- http://www.daniel3.net/

Dany-p
- Composer of royalty free jingles and royalty free music. Music for advertisements, movies, games, presentations, multimedia and video projects.
- http://www.danny-p.com/

Djunctionbox
- A web based collective of musicians and composers in the South West of England.
- http://www.djunctionbox.com/

Dunstan House Music
- Publisher of the music of composer Daniel E. Gawthrop.
- http://dunstanhouse.com/

David Michael Frank
- Composer of television, film and soundtracks. Site includes MP3s, Bio, and filmography.
- http://www.davidmichaelfrank.com/

DebMusic
- Original, and custom music production, vocals, live performances, CDs and virtual performances.
- http://www.debmusic.com/

Damian Valentine Music
- Music composing, composition for movies, films, commercials, and video games.
- http://www.damianvalentinemusic.com/

David Orson Productions
- The David Orson Company specializing in commercial music production for film and television. Produces music for all types of films and television shows.
- http://www.davidorson.com/

Dave Cushman Music
- Composer, Arranger of Band Music, and Copyist.
- http://davecushmanmusic.com/

David Diggs
- Composer and arranger of jazz and rhythm and blues.
- http://www.daviddiggs.com/

Dave Myers Music Services
- Engraving, transcription, and arranging services. Custom written compositions and live music performance. Services available in southern New York, northern New Jersey, western Connecticut.
- http://www.davemyers.com/

David Winkler Music
- Christian composer, arranger, and clinician. Arrangements for church praise band/orchestra. Based in Nashville, Tennessee.
- http://www.davidwinkler.com/