Publishers – W
- W F Howes
- Walker Publishing Company
- Walking Frog Records
- Walrus Music Publishing
- Walton Music
- Waltons Music
- Warger-te Kolstee
- Warner Chappell Music
- Warwick Music
- Waveney Music Publishing
- Wayne State University Press
- WB/BM Archive
- Wei I Plastics
- Weinberger
- Weintraub Publishing
- Wells Music Publishers
- Weltmusik Edition International
- Wergo
- Wertach Musikverlag
- Wessmans musikförlag
- WestBow Press
- Westminster Music
- Weton-Wesgram
- White Cliffs Media
- White Prince Editions
- Whitlock Trust
- Wicky Music
- Wide World
- Wiener Urtext
- Wilkinson
- Willem de Mooy
- Willemsen
- Williamson Music
- Willis Music
- Wilton
- Wim Magré
- Wingert-Jones
- Wings Press
- Winner Music
- Winwood Music
- Wise Essex Music
- Wise Publications
- Wisteria Music Books
- Wolters Noordhoff
- Wolthuis Muziekschool
- Wood Lake Books
- WoodBrass Music
- Woods Music & Books
- Woodstock
- Working Muso
- World of Brass
- Worship Together
- Worthy Shorts
- Wright & Round Limited
- Writers Of Note Limited
- WW Norton & Co