Players — K
- Kila Ka'aihue 2008–2012
- Jim Kaat 1959–1983
- Kevin Kaczmarski 2018–2018
- Jack Kading 1910–1914
- Jake Kafora 1913–1914
- Ike Kahdot 1922–1922
- Nick Kahl 1905–1905
- Bob Kahle 1938–1938
- George Kahler 1910–1914
- Owen Kahn 1930–1930
- Tommy Kahnle 2014–2025
- Mike Kahoe 1895–1909
- Don Kainer 1980–1980
- Al Kaiser 1911–1914
- Bob Kaiser 1971–1971
- Cecil Kaiser 1946–1947
- Connor Kaiser 2023–2025
- Don Kaiser 1955–1957
- Jeff Kaiser 1985–1993
- George Kaiserling 1914–1915
- John Kalahan 1903–1903
- Charlie Kalbfus 1884–1884
- Bill Kalfass 1937–1937
- Frank Kalin 1940–1943
- Al Kaline 1953–1974
- Ryan Kalish 2010–2016
- Rudy Kallio 1918–1925
- Scott Kamieniecki 1991–2000
- Rob Kaminsky 2020–2020
- Willie Kamm 1923–1935
- Bob Kammeyer 1978–1979
- Ike Kamp 1924–1925
- Alex Kampouris 1934–1943
- Frank Kane 1915–1919
- Harry Kane 1902–1906
- Jerry Kane 1890–1890
- Jim Kane 1908–1908
- John Kane 1925–1925
- John Kane 1907–1910
- Tom Kane 1938–1938
- Rod Kanehl 1962–1964
- Jung Ho Kang 2015–2019
- Erv Kantlehner 1914–1916
- Gabe Kapler 1998–2010
- Henry Kappel 1887–1889
- Joe Kappel 1884–1890
- James Kaprielian 2020–2023
- Ricky Karcher 2023–2023
- Matt Karchner 1995–2000
- Paul Kardow 1936–1936
- Ed Karger 1906–1911
- James Karinchak 2019–2023
- Ron Karkovice 1986–1997
- Andy Karl 1943–1947
- Scott Karl 1995–2000
- Bill Karlon 1930–1930
- Bill Karns 1901–1901
- Nate Karns 2013–2019
- Jason Karnuth 2001–2005
- Marty Karow 1927–1927
- Ryan Karp 1995–1997
- Herb Karpel 1946–1946
- Benn Karr 1920–1927
- Eric Karros 1991–2004
- Kyle Karros 2025–2025
- Steve Karsay 1993–2006
- John Karst 1915–1915
- Jeff Karstens 2006–2012
- Takashi Kashiwada 1997–1997
- Eddie Kasko 1957–1966
- Matt Kata 2003–2009
- Gosuke Katoh 2022–2022
- Jack Katoll 1898–1902
- Ray Katt 1952–1959
- Bob Katz 1944–1944
- Benny Kauff 1912–1920
- Dick Kauffman 1914–1915
- Karl Kauffmann 2023–2023
- Curt Kaufman 1982–1984
- Tony Kaufmann 1921–1935
- Niko Kavadas 2024–2025
- Charlie Kavanagh 1914–1914
- Leo Kavanagh 1914–1914
- Marty Kavanagh 1914–1918
- Kenshin Kawakami 2009–2010
- Munenori Kawasaki 2012–2016
- Anthony Kay 2019–2023
- Bill Kay 1907–1907
- Justin Kaye 2002–2002
- C. J. Kayfus 2025–2025
- Eddie Kazak 1948–1952
- Ted Kazanski 1953–1958
- Sean Kazmar 2008–2021
- Scott Kazmir 2004–2021
- Greg Keagle 1996–1998
- Steve Kealey 1968–1973
- W. L. Keane 1931–1931
- Bob Kearney 1979–1987
- Austin Kearns 2002–2013
- Teddy Kearns 1920–1925
- Tom Kearns 1880–1884
- kearn01 1946–1946
- Eddie Kearse 1942–1942
- Ed Keas 1888–1888
- Luke Keaschall 2025–2025
- Bob Keating 1887–1887
- Ray Keating 1912–1919
- Walter Keating 1913–1926
- Greg Keatley 1981–1981
- Cactus Keck 1922–1923
- Pat Keedy 1985–1989
- Bobby Keefe 1907–1912
- Dave Keefe 1917–1922
- George Keefe 1886–1891
- John Keefe 1890–1890
- Tim Keefe 1880–1893
- Bob Keegan 1953–1958
- Ed Keegan 1959–1962
- Willie Keeler 1892–1910
- Burt Keeley 1908–1909
- Ben Keeling 1943–1943
- Bob Keely 1944–1945
- Bill Keen 1911–1911
- Vic Keen 1918–1927
- Jack Keenan 1891–1891
- Jim Keenan 1875–1891
- Jimmie Keenan 1920–1921
- Harry Keener 1896–1896
- Jeff Keener 1982–1983
- Joe Keener 1976–1976
- George Keerl 1875–1875
- Jim Keesey 1925–1930
- Eugene Keeton 1922–1926
- Rickey Keeton 1980–1981
- Frank Keffer 1890–1890
- Chet Kehn 1942–1942
- Katsy Keifer 1914–1914
- DaShawn Keirsey 2024–2025
- Randy Keisler 2000–2007
- Bill Keister 1896–1903
- Colt Keith 2024–2025
- Mike Kekich 1965–1977
- Keone Kela 2015–2021
- George Kelb 1898–1898
- Jarred Kelenic 2021–2025
- Mickey Keliher 1911–1912
- George Kell 1943–1957
- Skeeter Kell 1952–1952
- Duke Kelleher 1916–1916
- Frankie Kelleher 1942–1943
- Hal Kelleher 1935–1938
- John Kelleher 1912–1924
- Mick Kelleher 1972–1982
- Brad Keller 2018–2025
- Charlie Keller 1939–1952
- Hal Keller 1949–1952
- Kris Keller 2002–2002
- Kyle Keller 2019–2021
- Mitch Keller 2019–2025
- Ron Keller 1966–1968
- Frank Kellert 1953–1956
- Al Kellett 1923–1924
- Red Kellett 1934–1934
- Dick Kelley 1964–1971
- Harry Kelley 1925–1939
- Joe Kelley 1891–1908
- Mike Kelley 1899–1899
- Shawn Kelley 2009–2019
- Tom Kelley 1964–1973
- Trevor Kelley 2019–2023
- Frank Kelliher 1919–1919
- Leon Kellman 1946–1948
- Alex Kellner 1948–1959
- Walt Kellner 1952–1953
- Al Kellogg 1908–1908
- Bill Kellogg 1914–1914
- Nate Kellogg 1885–1885
- Win Kellum 1901–1905
- Bill Kelly 1871–1871
- Bill Kelly 1920–1928
- Billy Kelly 1910–1913
- Bob Kelly 1951–1958
- Bryan Kelly 1986–1987
- Carson Kelly 2016–2025
- Casey Kelly 2012–2025
- Charlie Kelly 1883–1886
- Don Kelly 2007–2016
- Ed Kelly 1914–1914
- George Kelly 1915–1932
- Herb Kelly 1914–1915
- Jim Kelly 1914–1918
- Joe Kelly 1914–1919
- Joe Kelly 1926–1928
- Joe Kelly 2012–2024
- John Kelly 1879–1884
- John Kelly 1907–1907
- Kenny Kelly 2000–2005
- Kevin Kelly 2023–2025
- Kick Kelly 1879–1879
- King Kelly 1878–1893
- Merrill Kelly 2019–2025
- Michael Kelly 2022–2025
- Mike Kelly 1994–1999
- Mike Kelly 1926–1926
- Pat Kelly 1991–1999
- Pat Kelly 1980–1980
- Pat Kelly 1967–1981
- Red Kelly 1910–1910
- Ren Kelly 1923–1923
- Roberto Kelly 1987–2000
- Ryan Kelly 2015–2015
- Speed Kelly 1909–1909
- Tom Kelly 1975–1975
- Ty Kelly 2016–2018
- Van Kelly 1969–1970
- W. H. Kelly 1941–1941
- William Kelly 1944–1945
- Zack Kelly 2022–2025
- Billy Kelsey 1907–1907
- kelse01 1943–1943
- Bill Kelso 1964–1968
- Ken Keltner 1937–1950
- David Kelton 2003–2004
- John Kelty 1890–1890
- Bill Kemmer 1895–1895
- Russ Kemmerer 1954–1963
- Rudy Kemmler 1879–1889
- Dutch Kemner 1929–1929
- Ducky Kemp 1923–1924
- Gabby Kemp 1938–1941
- George Kemp 1943–1943
- John Kemp 1923–1928
- Matt Kemp 2006–2020
- Otto Kemp 2025–2025
- Steve Kemp 1977–1988
- Tony Kemp 2016–2024
- Fred Kendall 1969–1980
- Jason Kendall 1996–2010
- Al Kenders 1961–1961
- Howie Kendrick 2006–2020
- Kyle Kendrick 2007–2017
- Ed Kenna 1902–1902
- Eddie Kenna 1928–1928
- Dan Kennard 1913–1925
- Adam Kennedy 1999–2012
- Bill Kennedy 1942–1947
- Bill Kennedy 1948–1957
- Bob Kennedy 1939–1957
- Brett Kennedy 2018–2023
- Brickyard Kennedy 1892–1903
- Buddy Kennedy 2022–2025
- Doc Kennedy 1879–1883
- Ed Kennedy 1884–1884
- Ed Kennedy 1883–1886
- Ian Kennedy 2007–2023
- Jim Kennedy 1970–1970
- Joe Kennedy 2001–2007
- John Kennedy 1962–1974
- John Kennedy 1957–1957
- Junior Kennedy 1974–1983
- Monty Kennedy 1946–1953
- Ray Kennedy 1916–1916
- Sherman Kennedy 1902–1902
- Ted Kennedy 1885–1886
- Terry Kennedy 1978–1991
- Vern Kennedy 1934–1945
- Art Kenney 1938–1938
- Jerry Kenney 1967–1973
- John Kenney 1872–1872
- Logan Kensing 2004–2016
- Ed Kent 1884–1884
- Jeff Kent 1992–2008
- Maury Kent 1912–1913
- Steve Kent 2002–2002
- Zak Kent 2025–2025
- kenwo01 1927–1927
- Dick Kenworthy 1962–1968
- Duke Kenworthy 1912–1917
- Harry Kenyon 1919–1929
- Joe Keough 1968–1973
- Marty Keough 1956–1966
- Matt Keough 1977–1986
- Max Kepler 2015–2025
- Bobby Keppel 2006–2009
- Jeff Keppinger 2004–2013
- Kurt Kepshire 1984–1986
- Charlie Kerfeld 1985–1990
- Gus Keriazakos 1950–1955
- John Kerins 1884–1890
- Orion Kerkering 2023–2025
- Orie Kerlin 1915–1915
- Bill Kern 1962–1962
- Jim Kern 1974–1986
- Joe Kernan 1873–1873
- George Kernek 1965–1966
- John Kerner 1931–1933
- Russ Kerns 1945–1945
- Buddy Kerr 1943–1951
- Dickey Kerr 1919–1925
- Doc Kerr 1914–1915
- John Kerr 1923–1934
- Mel Kerr 1925–1925
- Ray Kerr 2022–2024
- Joe Kerrigan 1976–1980
- kerry01 1929–1929
- Clayton Kershaw 2008–2025
- Jason Kershner 2002–2004
- Dan Kerwin 1903–1903
- Don Kessinger 1964–1979
- Grae Kessinger 2023–2024
- Keith Kessinger 1993–1993
- Henry Kessler 1873–1877
- kessl01 1945–1945
- Rick Kester 1968–1970
- Fred Ketchum 1899–1901
- Gus Ketchum 1922–1922
- Phil Ketter 1912–1912
- Dallas Keuchel 2012–2024
- Henry Keupper 1914–1914
- Jimmy Key 1984–1998
- Red Keys 1918–1918
- Robert Keys 1941–1945
- Brian Keyser 1995–1996
- Sam Khalifa 1985–1987
- Horace Kibbie 1925–1925
- Jack Kibble 1912–1912
- Mike Kickham 2013–2021
- Masao Kida 1999–2005
- Carter Kieboom 2019–2025
- Spencer Kieboom 2016–2018
- Dana Kiecker 1990–1991
- Joe Kiefer 1920–1926
- Mark Kiefer 1993–1996
- Steve Kiefer 1984–1989
- Dean Kiekhefer 2016–2018
- Bobby Kielty 2001–2007
- John Kiely 1991–1993
- Leo Kiely 1951–1960
- Bill Kienzle 1882–1884
- Kevin Kiermaier 2013–2024
- Brooks Kieschnick 1996–2004
- Roger Kieschnick 2013–2014
- Yusei Kikuchi 2019–2025
- Brad Kilby 2009–2010
- Pete Kilduff 1917–1921
- Darryl Kile 1991–2002
- John Kiley 1884–1891
- Paul Kilgus 1987–1993
- Pat Kilhullen 1914–1914
- Caleb Kilian 2022–2024
- Mike Kilkenny 1969–1973
- Harmon Killebrew 1954–1975
- Evans Killeen 1959–1959
- Henry Killeen 1891–1891
- Bill Killefer 1909–1921
- Red Killefer 1907–1916
- Frank Killen 1891–1900
- Ed Killian 1903–1910
- Jack Killilay 1911–1911
- Franklyn Kilome 2020–2020
- Matt Kilroy 1886–1898
- Mike Kilroy 1888–1891
- Byung-Hyun Kim 1999–2007
- Ha-Seong Kim 2021–2025
- Hyeseong Kim 2025–2025
- Hyun Soo Kim 2016–2017
- Kwang Hyun Kim 2020–2021
- Sun-Woo Kim 2001–2006
- Cole Kimball 2011–2011
- Gene Kimball 1871–1871
- Newt Kimball 1937–1943
- Sam Kimber 1884–1885
- Harry Kimberlin 1936–1939
- Dick Kimble 1945–1945
- Howard Kimbo 1932–1932
- Craig Kimbrel 2010–2025
- Henry Kimbro 1937–1948
- Ted Kimbro 1915–1918
- Larry Kimbrough 1942–1948
- Hal Kime 1920–1920
- Bruce Kimm 1976–1980
- Wally Kimmick 1919–1926
- Chad Kimsey 1929–1936
- Roosevelt Kinard 1932–1932
- Harry Kincannon 1932–1939
- Jerry Kindall 1956–1965
- Ellis Kinder 1946–1957
- Bill Kindle 1911–1925
- kine01 1947–1947
- Ralph Kiner 1946–1955
- Isiah Kiner-Falefa 2018–2025
- Bob King 1926–1926
- Brennan King 1943–1943
- Bryan King 2024–2025
- Charlie King 1937–1938
- Chick King 1954–1959
- Clyde King 1944–1953
- Curtis King 1997–1999
- Dolly King 1944–1947
- Earnest King 1921–1921
- Eric King 1986–1992
- Hal King 1967–1974
- Jeff King 1989–1999
- Jim King 1955–1967
- John King 2020–2025
- Kevin King 1993–1995
- Lee King 1916–1922
- Lee King 1916–1919
- Lynn King 1935–1939
- Marshall King 1871–1872
- Mike King 2019–2025
- Nelson King 1954–1957
- Ray King 1999–2008
- Richard King 1943–1948
- Sam King 1884–1884
- Silver King 1886–1897
- Steve King 1871–1872
- Wilbert King 1944–1948
- king01 1931–1931
- Wes Kingdon 1932–1932
- Mike Kingery 1986–1996
- Scott Kingery 2018–2025
- Nick Kingham 2018–2019
- Brian Kingman 1979–1983
- Dave Kingman 1971–1986
- Harry Kingman 1914–1914
- Gene Kingsale 1996–2003
- Mike Kinkade 1998–2003
- Tyler Kinley 2018–2025
- Billy Kinloch 1895–1895
- Dennis Kinney 1978–1982
- Josh Kinney 2006–2012
- Matt Kinney 2000–2005
- Walt Kinney 1918–1923
- Mike Kinnunen 1980–1987
- Bob Kinsella 1919–1920
- Ed Kinsella 1905–1910
- Ian Kinsler 2006–2019
- William Kinsler 1893–1893
- Tom Kinslow 1886–1898
- Brandon Kintzler 2010–2021
- Matt Kinzer 1989–1990
- Walt Kinzie 1882–1884
- Harry Kinzy 1934–1934
- Jason Kipnis 2011–2020
- Fred Kipp 1957–1960
- Bob Kipper 1985–1992
- Thornton Kipper 1953–1955
- Ed Kippert 1914–1914
- Clay Kirby 1969–1976
- George Kirby 2022–2025
- Jim Kirby 1949–1949
- John Kirby 1884–1888
- LaRue Kirby 1912–1915
- Wayne Kirby 1991–1998
- kirby01 1928–1928
- Mike Kircher 1919–1921
- Alex Kirilloff 2021–2024
- Alejandro Kirk 2020–2025
- Bill Kirk 1961–1961
- Tom Kirk 1947–1947
- Jay Kirke 1910–1918
- Willie Kirkland 1958–1966
- Michael Kirkman 2010–2016
- Ed Kirkpatrick 1962–1977
- Enos Kirkpatrick 1912–1915
- Ivy Kirksey 1926–1926
- Bill Kirksieck 1939–1939
- Don Kirkwood 1974–1978
- Joe Kirrene 1950–1954
- Harry Kirsch 1910–1910
- Garland Kiser 1991–1991
- Ernie Kish 1945–1945
- Rube Kisinger 1902–1903
- Bruce Kison 1971–1985
- Bill Kissinger 1895–1897
- Austin Kitchen 2024–2024
- Frank Kitson 1898–1907
- Chris Kitsos 1954–1954
- Ron Kittle 1982–1991
- Andrew Kittredge 2017–2025
- Malachi Kittridge 1890–1906
- Patrick Kivlehan 2016–2021
- Heston Kjerstad 2023–2025
- Hugo Klaerner 1934–1934
- Fred Klages 1966–1967
- Danny Klassen 1998–2003
- Billy Klaus 1952–1963
- Bobby Klaus 1964–1965
- Al Klawitter 1909–1913
- Tom Klawitter 1985–1985
- Ollie Klee 1925–1925
- Chuck Klein 1928–1944
- Lou Klein 1943–1951
- Phil Klein 2014–2016
- Will Klein 2024–2025
- Hal Kleine 1944–1945
- Ted Kleinhans 1934–1938
- Norbert Kleinke 1935–1937
- Red Kleinow 1904–1911
- Ed Klepfer 1911–1919
- Ryan Klesko 1992–2007
- Jay Kleven 1976–1976
- Ed Klieman 1943–1950
- Lou Klimchock 1958–1970
- Ron Klimkowski 1969–1972
- Bob Kline 1930–1934
- Bobby Kline 1955–1955
- Branden Kline 2019–2020
- Ron Kline 1952–1970
- Steve Kline 1997–2007
- Steve Kline 1970–1977
- Bill Kling 1891–1895
- Johnny Kling 1900–1913
- Rudy Kling 1902–1902
- Scott Klingenbeck 1994–1998
- Bob Klinger 1938–1947
- Joe Klinger 1927–1930
- Joe Klink 1987–1996
- Johnny Klippstein 1950–1967
- Fred Klobedanz 1896–1902
- Gabe Klobosits 2021–2021
- Adam Kloffenstein 2024–2024
- Stan Klopp 1944–1944
- John Kloza 1931–1932
- Corey Kluber 2011–2023
- Joe Klugmann 1921–1925
- Elmer Klumpp 1934–1937
- Billy Klusman 1888–1890
- Ted Kluszewski 1947–1961
- Mickey Klutts 1976–1983
- Clyde Kluttz 1942–1952
- Joe Kmak 1993–1995
- Otto Knabe 1905–1916
- Landon Knack 2024–2025
- Brent Knackert 1990–1996
- Andrew Knapp 2017–2024
- Chris Knapp 1975–1980
- Cotton Knaupp 1910–1911
- Frank Knauss 1890–1895
- Corey Knebel 2014–2022
- Reiss Knehr 2021–2023
- Rudy Kneisch 1926–1926
- Phil Knell 1888–1895
- Bob Knepper 1976–1990
- Charlie Knepper 1899–1899
- Lou Knerr 1945–1947
- Elmer Knetzer 1909–1917
- Alan Knicely 1979–1986
- Austin Knickerbocker 1947–1947
- Bill Knickerbocker 1933–1942
- Brandon Knight 2001–2008
- Dave Knight 1930–1930
- Dusten Knight 2021–2022
- George Knight 1875–1875
- Jack Knight 1922–1927
- Joe Knight 1884–1890
- John Knight 1905–1913
- Lon Knight 1875–1885
- Ray Knight 1974–1988
- Pete Knisely 1912–1915
- Andrew Knizner 2019–2025
- Chuck Knoblauch 1991–2002
- Mike Knode 1920–1920
- Ray Knode 1923–1926
- Jake Knodell 1874–1878
- Justin Knoedler 2004–2006
- Punch Knoll 1905–1905
- Hub Knolls 1906–1906
- Bobby Knoop 1964–1972
- Randy Knorr 1991–2001
- Fritz Knothe 1932–1933
- George Knothe 1932–1932
- Eric Knott 2001–2003
- Jack Knott 1933–1946
- Jon Knott 2004–2007
- Gary Knotts 2001–2004
- Joe Knotts 1907–1907
- Ed Knouff 1885–1889
- Darold Knowles 1965–1980
- Jimmy Knowles 1884–1892
- Tom Knowlson 1915–1915
- Bill Knowlton 1920–1920
- Andy Knox 1890–1890
- Cliff Knox 1924–1924
- John Knox 1972–1975
- Kurt Knudsen 1992–1994
- Guido Knudson 2015–2015
- Mark Knudson 1985–1993
- Nick Koback 1953–1955
- Masahide Kobayashi 2008–2009
- Kevin Kobel 1973–1980
- Jeff Kobernus 2013–2014
- Alan Koch 1963–1964
- Barney Koch 1944–1944
- Billy Koch 1999–2004
- Grant Koch 2024–2024
- Matt Koch 2016–2024
- Jack Kochanowicz 2024–2025
- Brad Kocher 1912–1916
- Dick Koecher 1946–1948
- Pete Koegel 1970–1972
- Ben Koehler 1905–1906
- Pip Koehler 1925–1925
- Tom Koehler 2012–2017
- Brian Koelling 1993–1993
- Len Koenecke 1932–1935
- Jared Koenig 2022–2025
- Mark Koenig 1925–1936
- Will Koenigsmark 1919–1919
- Brody Koerner 2021–2021
- Elmer Koestner 1910–1914
- Henry Kohler 1871–1874
- Joe Kohlman 1937–1938
- Ryan Kohlmeier 2000–2001
- Taylor Kohlwey 2023–2023
- Michael Kohn 2010–2015
- Dick Kokos 1948–1954
- Adam Kolarek 2017–2023
- Brandon Kolb 2000–2001
- Danny Kolb 1999–2007
- Eddie Kolb 1899–1899
- Gary Kolb 1960–1969
- Stephen Kolek 2024–2025
- Don Kolloway 1940–1953
- Mark Kolozsvary 2022–2023
- Ray Kolp 1921–1934
- Karl Kolseth 1915–1915
- Hal Kolstad 1962–1963
- Erik Komatsu 2012–2012
- Shane Komine 2006–2007
- Satoru Komiyama 2002–2002
- Fred Kommers 1913–1914
- Brad Komminsk 1983–1991
- Paul Konerko 1997–2014
- Ed Konetchy 1907–1921
- Doug Konieczny 1973–1977
- Alex Konikowski 1948–1954
- Mike Konnick 1909–1910
- Bruce Konopka 1942–1946
- Jim Konstanty 1944–1956
- George Kontos 2011–2018
- Dennis Konuszewski 1995–1995
- Dae-Sung Koo 2005–2005
- Ernie Koob 1915–1919
- Cal Koonce 1962–1971
- Graham Koonce 2003–2003
- Harry Koons 1884–1884
- Jerry Koosman 1967–1985
- George Kopacz 1966–1970
- Michael Kopech 2018–2025
- Larry Kopf 1913–1923
- Wally Kopf 1921–1921
- Howie Koplitz 1961–1966
- Mike Koplove 2001–2007
- Merlin Kopp 1915–1919
- Joe Koppe 1958–1965
- George Kopshaw 1923–1923
- Steve Korcheck 1954–1959
- Bobby Korecky 2008–2014
- Art Kores 1915–1915
- George Korince 1966–1967
- John Koronka 2005–2009
- Jim Korwan 1894–1897
- Andy Kosco 1965–1974
- Joe Koshansky 2007–2008
- Clem Koshorek 1952–1953
- Bill Koski 1951–1951
- Corey Koskie 1998–2006
- Dave Koslo 1941–1955
- Kevin Koslofski 1992–1996
- Mike Kosman 1944–1944
- Christian Koss 2025–2025
- Joe Kostal 1896–1896
- Fred Koster 1931–1931
- Frank Kostro 1962–1969
- Casey Kotchman 2004–2013
- Mark Kotsay 1997–2013
- George Kottaras 2008–2014
- Sandy Koufax 1955–1966
- Josef Koukalik 1904–1904
- Lou Koupal 1925–1937
- Kevin Kouzmanoff 2006–2014
- Fabian Kowalik 1932–1936
- Jackson Kowar 2021–2025
- Brian Kowitz 1995–1995
- Ernie Koy 1938–1942
- Al Kozar 1948–1950
- Ben Kozlowski 2002–2002
- Pete Kozma 2011–2021
- Joe Kracher 1939–1939
- Joe Kraemer 1989–1990
- Clarence Kraft 1914–1914
- Joe Krakauskas 1937–1946
- Jack Kralick 1959–1967
- Steve Kraly 1953–1953
- Jack Kramer 1939–1951
- Kevin Kramer 2018–2019
- Randy Kramer 1988–1992
- Tom Kramer 1991–1993
- Ed Kranepool 1962–1979
- Max Kranick 2021–2025
- Floyd Kranson 1935–1940
- Gene Krapp 1911–1915
- Erik Kratz 2010–2020
- Jack Kraus 1943–1946
- Charlie Krause 1901–1901
- Harry Krause 1908–1912
- Marc Krauss 2013–2015
- Lew Krausse 1931–1932
- Lew Krausse 1961–1974
- Ken Kravec 1975–1982
- Evan Kravetz 2024–2024
- Danny Kravitz 1956–1960
- Ray Krawczyk 1984–1989
- Frank Kreeger 1884–1884
- Mike Kreevich 1931–1945
- Joey Krehbiel 2018–2023
- Charlie Krehmeyer 1884–1885
- Ryan Kreidler 2022–2025
- Mickey Kreitner 1943–1944
- Ralph Kreitz 1911–1911
- Dean Kremer 2020–2025
- Ray Kremer 1924–1933
- Jimmy Kremers 1990–1990
- Jim Kremmel 1973–1974
- Wayne Krenchicki 1979–1986
- Chuck Kress 1947–1954
- Red Kress 1927–1946
- Lou Kretlow 1946–1956
- Rick Kreuger 1975–1978
- Chad Kreuter 1988–2003
- Frank Kreutzer 1962–1969
- Paul Krichell 1911–1912
- Bill Krieg 1884–1887
- Kurt Krieger 1949–1951
- Brooks Kriske 2020–2025
- Howie Krist 1937–1946
- Zac Kristofak 2024–2024
- Rick Krivda 1995–1998
- Jason Krizan 2022–2022
- Gus Krock 1888–1890
- Josh Kroeger 2004–2004
- Zach Kroenke 2010–2011
- Rube Kroh 1906–1912
- Ian Krol 2013–2021
- Gary Kroll 1964–1969
- John Kroner 1935–1938
- Matt Krook 2023–2025
- Marc Kroon 1995–2004
- Mike Krsnich 1960–1962
- Rocky Krsnich 1949–1953
- Bill Krueger 1983–1995
- Ernie Krueger 1913–1925
- Otto Krueger 1899–1905
- Chris Krug 1965–1969
- Gene Krug 1981–1981
- Henry Krug 1902–1902
- Marty Krug 1912–1922
- Abe Kruger 1908–1908
- Art Kruger 1907–1915
- Jack Kruger 2021–2021
- John Kruk 1986–1995
- Mike Krukow 1976–1989
- Al Krumm 1889–1889
- Dick Kryhoski 1949–1955
- Dave Krynzel 2004–2005
- Tony Kubek 1957–1965
- Jason Kubel 2004–2014
- Jeff Kubenka 1998–1999
- Ted Kubiak 1967–1976
- Tim Kubinski 1997–1999
- Jack Kubiszyn 1961–1962
- Kyle Kubitza 2015–2015
- Gil Kubski 1980–1980
- Johnny Kucab 1950–1952
- Jack Kucek 1974–1980
- Johnny Kucks 1955–1960
- Steve Kuczek 1949–1949
- Bert Kuczynski 1943–1943
- Bill Kuehne 1883–1892
- Harvey Kuenn 1952–1966
- Fred Kuhaulua 1977–1981
- Joe Kuhel 1930–1947
- Chad Kuhl 2016–2024
- Bub Kuhn 1924–1924
- Kenny Kuhn 1955–1957
- Walt Kuhn 1912–1914
- Joel Kuhnel 2019–2024
- Charlie Kuhns 1897–1899
- Duane Kuiper 1974–1985
- Jack Kull 1909–1909
- Mike Kume 1955–1955
- Bill Kunkel 1961–1963
- Jeff Kunkel 1984–1992
- Rusty Kuntz 1979–1985
- Earl Kunz 1923–1923
- Eddie Kunz 2008–2008
- Hung-Chih Kuo 2005–2011
- Hiroki Kuroda 2008–2014
- Ryan Kurosaki 1975–1975
- Whitey Kurowski 1941–1949
- Hal Kurtz 1968–1968
- Nick Kurtz 2025–2025
- Ed Kusel 1909–1909
- Emil Kush 1941–1949
- Craig Kusick 1973–1979
- Art Kusnyer 1970–1978
- Jules Kustus 1909–1909
- Randy Kutcher 1986–1990
- Joe Kutina 1911–1912
- Marty Kutyna 1959–1962
- Jerry Kutzler 1990–1990
- Masumi Kuwata 2007–2007
- Bob Kuzava 1946–1957
- Al Kvasnak 1942–1942
- Steven Kwan 2022–2025
- Andy Kyle 1912–1912
- Andy Kyle 1922–1922
- Fritz Von Kolnitz 1914–1916