- Wachowska, Magdalena (Space Opera)
- Wächter, Eberard (Die Fledermaus, The Consul)
- Wagner, Jacquelyn (Die Meistersinger von Nürnberg)
- Wagner, Josef (La flûte enchantée)
- Walewska, Małgorzata (Goplana)
- Walker, David (Rinaldo)
- Wallace, Stephen (L’opera seria)
- van der Walt, Deon (Linda di Chamounix)
- van Wanroij, Judith (Orfeo, La coronatione di Poppea)
- Watson, Katherine (Il ritorno d’Ulisse in patria, Hippolyte et Aricie)
- Watson, Lilian (Mitridate re di Ponto)
- Watson, Linda (Die Walküre)
- Watts, Andrew (Lear, The Minotaur, Alice in Wonderland)
- Watts, Elizabeth (Don Giovanni)
- Weikl, Bernd (Arabella)
- Weiland, Agnes Selma (Sancta Susanna)
- Weilitsch, Ljuba (The Consul)
- Werba, Markus (Le nozze di Figaro)
- Wesseling, Maria Riccarda (Orpheus und Eurydike)
- Westbroek, Eva-Maria (La fanciulla del west, Cavalleria rusticana/Pagliacci, Andrea Chénier, Il tabarro, Die Frau ohne Schatten, Lady Macbeth di Mcensk, Anna Nicole)
- Wey, Terry (Il Sant’Alessio)
- Whelan, Paul (L’incoronazione di Poppea)
- White, Willard (Il Giasone, Don Giovanni, Alceste, La damnation de Faust, Iolanta, L’amore delle tre melarance, Rise and Fall of the City of Mahagonny, Œdipus Rex, El Niño)
- Willeit, Sabina (Arlecchino)
- Willets, Owen (Arminio)
- Windgassen, Wolfgang (Die Fledermaus)
- Winkler, Martin (The Nose)
- Winter, Louise (Le nozze di Figaro)
- Wolf, Andreas (Don Giovanni)
- Workman, Charles (Acis and Galatea, Semele, La Gazzetta, Les stigmatisés, Cardillac, Marco Polo)
- Wottrich, Endrik (Alfonso und Estrella)
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