| Name | Roles |
|---|
| Kornfeld, Hannah Rose | Performer |
| Korngold, Erich | Conductor |
| Korngold, Erich Wolfgang | Music (2), Conductor |
| Korngold, George | Producer (2) |
| Korobkin, Len | Book |
| Korotkov, Yury | Book |
| Korres, Sokratis | Performer |
| Korsch, Conrad | Performer |
| Korst, Marjolijn | Performer |
| Korst, Wouter | Performer |
| Korsten, Gé | Performer |
| Kort, Renate | Performer |
| Korte, Hans | Performer (2) |
| Korte, Marion | Performer |
| Korté, Steve | Liner_Notes |
| Korteknie, Piet | Performer |
| Korteknie, Pieter | Performer (2) |
| Korth, Michael | Lyrics (2), Book (2) |
| Korthaze, Richard | Performer (2) |
| Kortner, Fritz | Performer |
| Kortnev, Aleksei | Translation |
| Kortum, Evelien | Performer |
| Korving, Evert Jan | Performer |
| Korving, Evert-Jan | Performer |
| Kory, Alexandra | Performer |
| Korzynski, Andrzej | Music |
| Kos, Maarten | Performer |
| Kosack, J | Lyrics, Book |
| Kosakow, Steven | Performer |
| Kosarin, Danny | Conductor (2), Producer |
| Kosarin, Michael | Music, Orchestrations, Conductor (19), Music_Director (5), Vocal_Arrangements (3), Producer (6), Performer (2) |
| Kosarin, Oscar | Orchestrations, Conductor (4), Music_Director (3), Dance_Music (3), Vocal_Arrangements (3) |
| Kosel, Mathias Christian | Music, Lyrics, Book, Conductor (2) |
| Koshetz, Marina | Performer |
| Koshiji, Fubuki | Performer |
| Koshino, Ryuu | Performer (6) |
| Koshiro, Miyako | Performer (2) |
| Kosielec, Jeremy | Performer |
| Koska, Elke | Performer |
| Kosleck, Martin | Performer |
| Kosma, Joseph | Music (3) |
| Kosman, Louis | Performer |
| Kossoff, David | Performer |
| Kossow, Kathryn | Performer |
| Kosta, Tessa | Performer (3) |
| Kostal, Irwin | Orchestrations (46), Conductor (17), Music_Director (7) |
| Kostelanetz, André | Orchestrations, Conductor (21), Music_Director (4), Performer (2) |
| Kostelec, Dan | Performer |
| Kosten, Rhoda | Performer |
| Koster, Rolf | Performer (15) |
