Kadlubowski, Walter Sr.

• Chicago, Illinois
• Manufacturer (Star Concertina), Musician, Promoter
• Honors: World Concertina Congress Hall of Fame (1994)

Kadlubowski, Walter Jr.

• Chicago, Illinois
• Manufacturer (Star Concertina, Eagle Concertina), Musician, Promoter
• Honors: World Concertina Congress Hall of Fame (1994)

Kaminski, James

• Lackawanna, New York
• Musician
• Bands: Steel City Brass, Buffalo Brass, Nickel City Boys

Kaminski, Mildred (Concertina Millie)

• Milwaukee, Wisconsin
• Bandleader, Musician
• Honors: World Concertina Congress Hall of Fame (1982)

Kamont, Dick

• Michigan City, Indiana
• Musician, Promoter (Polka DJ - WIMS and WEFM)

Karmasian, Joe (Polka Joe)

• LaGrange, Illinois
• Musician

Karpek, Andrew

• Milwaukee, Wisconsin
• Manufacturer (Karpek Concertina), Musician
• Honors: World Concertina Congress Hall of Fame (1976)

Karpek, George

• Milwaukee, Wisconsin
• Innovator, Manufacturer (Karpek Concertina), Musician
• Honors: World Concertina Congress Hall of Fame (1982)

Karwowski, Chris (1958 - )

• Ridgewood, New York
• Musician
• Bands: Mike Niemiec's Variety Band, The Hitmen, Jolly Rich

Katelan, George

• Pennsylvania
• Musician

Kath, Clarence (Ben)

• Arlington Heights, Illinois
• Musician
• Honors: World Concertina Congress Hall of Fame (2006)

Kay, Sal

• Hammond, Indiana
• Musician

Kehl, Wally

• Wisconsin
• Bandleader, Musician
• Bands: Wally Kehl Orchestra

Kenderes, Roger (1938 - )

• Fountain Valley, California
• Bandleader, Musician
• Bands: Roger and The Villagers

Kensy, Wally

• Minnesota
• Musician

Kerschke, Earl

• Waukesha, Wisconsin
• Musician

Kiewicz, Tadziu (1942 - )

• Las Vega, Nevada
• Musician
• Bands: Jimmie Mieszala's Music Explosion, 47th Street Concertina Club, Chet Lasik's Concertina Jamboree, Dial-A-Tones, Chicago's Milwaukee Ave, Little Richard Towalski, Chicago Polka Gents, Stas Bulanda's All-Stars, Joe Walega's Happy Hearts, Ed Klish and the Midnighters, Chet Kowalkowski's Polish Carolers

Kijek, Stanley

• Cleveland, Ohio
• Musician

King, Barney

• Schofield, Wisconsin
• Musician
• Honors: World Concertina Congress Hall of Fame (1987)

King, Bernie

• Schofield, Wisconsin
• Musician
• Honors: World Concertina Congress Hall of Fame (1987)

King (Kusczynski), Max (Ervin)

• Milwaukee, Wisconsin
• Musician
• Honors: World Concertina Congress Hall of Fame (1983)

Klaman, Frank

• Jackson, Wisconsin
• Composer, Musician
• Honors: World Concertina Congress Hall of Fame (1985)

Klinkosh, John

• Muskego, Wisconsin
• Musician

Kliszak, Casey

• Depew, New York
• Musician
• Bands: Happy Richie's Polka Band, Ampol Tones, Sunshine

Kloba, Ted

• Chicago, Illinois
• Musician, Promoter (The Concertina Novice)

Klossner, Donnie

• New Ulm, Minnesota
• Bandleader, Musician
• Bands: Donnie Klossner Band (Musik mit herz), Babe Wagner Band
• Honors: World Concertina Congress Hall of Fame (2005)

Kniess, Tom

• Stratford, Wisconsin
• Band Leader, Composer, Musician
• Bands: Tom Kniess Orchestra
• Honors: Wisconsin Band Leader of the Year (1996)

Knoll, Paul

• Sarasota, Florida
• Bandleader, Musician, Promoter
• Honors: World Concertina Congress Hall of Fame (2004)

Knoll, Robert

• Harvard, Illinois
• Musician

Kochanski, Andy

• Milwaukee Wisconsin
• Promoter (Kochanski's Concertina Beer Hall)

Kocon, Ed

• Hammond, Indiana
• Musician, Promoter (Cicero Concertina Circle)

Kocon, Mike

• Griffith, Indiana
• Musician, Promoter (Cicero Concertina Circle)

Kocon, Peter

• Hammond, Indiana
• Musician, Promoter (Cicero Concertina Circle), Teacher

Kocon, Stanley

• Hammond, Indiana
• Bandleader, Musician

Kodet, Ambrose

• Mankato, Minnesota
• Musician, Technician
• Honors: World Concertina Congress Hall of Fame (2004)

Kohan, Mark (1960 - )

• Orchard Park, New York
• Musician, Promoter (Author, Editor Polish American Journal)
• Bands: Steel City Brass

Kolpacki, LeRoy

• Wausau, Wisconsin
• Musician

Kondziella, Francis

• Milwaukee, Wisconsin
• Composer, Musician

Konkol, Ray

• Stevens Point, Wisconsin
• Bandleader, Musician
• Honors: World Concertina Congress Hall of Fame (2003)

Konrath, Lloyd

• Germantown, Wisconsin
• Musician, Promoter (World Concertina Congress)
• Honors: World Concertina Congress Hall of Fame (1999)

Kops, Earl (1930 - 2007)

• Muskegon, Michigan
• Musician
• Honors: World Concertina Congress Hall of Fame (1998)

Koryluk, Nick (1987 - )

• Hicksville, Long Island, New York
• Musician, Promoter (Internet Jockey: Polka Madness, Polka Jammer Network)
• Bands: Lenny Gomulka and The Chicago Push, also performed with: Polka Country Musicians, Eddie Biegaj and Crusade, Dennis Polisky and The Maestro's Men, Jolly Rich, John Steven's Doubleshot, Eddie Blazonczyk's Versatones, and Jimmy Sturr
• Honors: Freddy "K" Kendzierski Memorial Scholarship (2005)

Kostek, Tom (1951 - )

• Hadley, Massachusetts
• Musician
• Bands: Billy Belina and Bay State, Sounds Unlimited, Heavy Chicago

Kotkiewicz, Leo (1937 - 2006)

• Allison Park, Pennsylvania
• Musician

Krafjack, Mike

• Janesville, Wisconsin
• Musician

Krajewski, Randy

• Toledo, Ohio
• Musician
• Bands: Crusade, Holy Toledo

Kramarczyk, Jerry

• Harvard, Illinois
• Musician, Teacher
• Honors: World Concertina Congress Hall of Fame (1994)

Kramas, Paul

• Greenwood, Wisconsin
• Musician
• Honors: World Concertina Congress Hall of Fame (2003)

Krawiec, Greg Sr.

• South Bend, Indiana
• Musician
• Honors: World Concertina Congress Hall of Fame (2003)

Kreis, Ed

• West Bend, Wisconsin
• Musician, Technician (Kreis Concertina)

Krueger, Roy

• Illinois
• Musician

Krukowski, Erv

• Wausaukee, Wisconsin
• Musician
• Honors: World Concertina Congress Hall of Fame (2006)

Krzebiot, Edward (Slats) (1914 - 1992)

• Chicago, Illinois
• Musician
• Bands: 47th Street Concertina Club
• Honors: United Polka Association - Special Rcognition Award (1982), Mother Theresa Home - Appreciation Award (1980)

Kucera, Emil (Kutch)

• Chicago, Illinois
• Musician

Kucera, Frank

• El Monte, California
• Musician, Promoter
• Honors: World Concertina Congress Hall of Fame (1983)

Kucera, Sonny (The Professor)

• Arizona
• Musician, Teacher

Kujanik, Joseph

• Gary, Indiana
• Musician
• Honors: World Concertina Congress Hall of Fame (1998)

Kula, Tom

• Chicago, Illinois
• Composer, Musician
• Bands: Ampol-Aires, Chicago Concertina All-Stars

Kurdziel, Kevin J.

• Bloomfield, New Jersey
• Musician
• Bands: Variety, Jolly Rich and the Polka Stars, Freddy K Band ,Dynatones, Chicago Push, Brass Works, Chuck Pendrak, Rhythm and Sound
• Honors: Grammy Nominee (1990)

Kurdziel, Richard (Richie) Sr. (1946 - )

• Tonawanda, New York
• Musician
• Bands: Honky Hoppers, Buffalo Hi-Notes, Mix n Match

Kurszewski, Nicholas

• Wausau, Wisconsin
• Musician
• Honors: World Concertina Congress Hall of Fame (1990)

Kush, Ted

• Chicago, Illinois
• Musician

Kwas, Irvin

• Musician
• Honors: World Concertina Congress Hall of Fame (1991)