| Type | Cover | Title  | Date | Source | ||
| Audio |  |
Ka-boom! | 1980 | Original Off-Broadway Cast | ||
| Audio |  |
Kaat Mossel | 1994 | Original Dutch Cast | ||
| Noncommercial Audio |  |
MARKED FOR DELETION Kaatje Is Verdronken | 2004 | Dutch Cast Promo | ||
| Audio |  |
Kálmán on the Air: The Music of Emmerich Kálmán, Vol. 1 (Die Csárdásfürstin) | 1940 | Radio Cast | ||
| Audio | |
Kálmán on the Air: The Music of Emmerich Kálmán, Vol. 1 (Der Zigeunerprimas) | 1940 | Radio Cast | ||
| Audio |  |
Kamaleonic Weill | 1999 | Teresa de la Torre | ||
| Audio |  |
The Kander and Ebb Album | 1999 | Brent Barrett | ||
| Audio |  |
Een Kannibaal Als Jij En Ik | 1975 | Original Dutch Cast | ||
| Audio |  |
Käpt'n Bay Bay | 1994 | Hamburg Cast | ||
| Audio |  |
Karaoke Gilbert & Sullivan | 1993 | Studio Cast | ||
| Audio |  |
Karhuveljeni Koda (Brother Bear) | 2004 | Finnish Soundtrack | ||
| Audio |  |
The Karl Marx Play | 1973 | Original Cast members | ||
| Audio |  |
Kaspar Hauser | 2001 | Swedish Cast | ||
| Audio |  |
Kassa | 2007 | De Paardenkathedraal | ||
| Audio |  |
Kassensturz | N/A | Studio Cast | ||
| Audio |  |
Kat and the Kings | 1997 | South African Cast | ||
| Audio |  |
Kat and the Kings | 1998 | West End Cast | ||
| Video |  |
Katakuri-ke No Kôfuku | 2001 | Film | ||
| Audio |  |
Kathryn Grayson Sings | 1951 | Kathryn Grayson | ||
| Audio |  |
Kauf Dir Ein Kind | 2007 | Original Berlin Cast | ||
| Audio |  |
Kaunotar Ja Hirviö (Beauty and the Beast) | 1992 | Finnish Soundtrack | ||
| Audio | |
Kay Thompson - The Golden Years, 1934-1954 | N/A | Kay Thompson, Compilation | ||
| Audio |  |
Kaye Ballard Sings Fanny Brice | 1958 | Kaye Ballard | ||
| Audio |  |
Kaye Ballard Sings... | 2006 | Kaye Ballard | ||
| Audio |  |
Kaye Ballard: Another Final Farewell Appearance | 2000 | Kaye Ballard | ||
| Audio |  |
Kaye Ballard: The Ladies Who Wrote the Lyrics | 1993 | Kaye Ballard | ||
| Audio |  |
Kazablan | 1966 | Original Israeli Cast | ||
| Audio |  |
Kazablan | 1973 | Soundtrack | ||
| Audio |  |
Kean | 1961 | Robert Mersey and his Orchestra | ||
| Audio |  |
Kean | 1961 | Original Broadway Cast | ||
| Video |  |
Kean | 2007 | Takarazuka Cast | ||
| Audio |  |
Keating! | 2006 | Australian Cast | ||
| Video |  |
Keating! | 2008 | Australian Cast | ||
| Audio |  |
Keating! A Country Soul Opera (Keating!) | 2005 | Original Australian Cast | ||
| Audio |  |
Keep Cool | 1993 | Original Swiss Cast | ||
| Audio |  |
Keep Cool | 1995 | Original Köln Cast | ||
| Audio |  |
Keep Cool | 1995 | Studio Cast | ||
| Audio |  |
Keep On Smiling: Songs by Irving Berlin 1915-1918 | 1996 | Benjamin Sears and Bradford Conner | ||
| Audio |  |
Keep On The Sunny Side | 2004 | Original Cast | ||
| Audio |  |
Keep Your Undershirt On | 1989 | Studio Cast | ||
| Audio |  |
Keepin' out of Mischief | 2008 | Bruce Dow | ||
| Audio |  |
Keeping You In Mind |  | 2007 | Emily Saxe | |
| Audio |  |
A Keepsake of Live Excerpts (We Don't Have Husbands) | 2005 | The Kransky Sisters | ||
| Audio |  |
Keine Angst, Maria | 1994 | Studio Cast | ||
| Audio |  |
Kelly | 1964 | Demo | ||
| Audio |  |
Kelly | 1998 | Studio Cast | ||
| Audio |  |
Kelly's Truck Stop Bop | | N/A | Original Cast | |
| Audio |  |
Kenneth Williams Interesting Facts: The Decca Recordings 1960- (One Over The Eight) | 1961 | Original London Cast | ||
| Audio |  |
Kenward Elmslie Visited | 1982 | Studio Cast | ||
| Noncommercial Audio | |
Kept | 2001 | Demo |