- Hubert Kleinpeter to Michael Kleinschmidt
- Michelle Kleinschmidt to Charles Kleiser
- Daniel Kleiser to Daniel Klem
- David Klem to William Kleman
- Barbara Klemann to William Klemish
- Mark Klemka to Susan Klemm
- Taylor Klemm to Kenneth Klemp
- Kyle Klemp to Timothy Klenk
- Vernon Klenk to Lawrence Klepner
- Jennifer Klepoch to Jerome Kleppin
- Kenneth Kleppin to Stephanie Klett
- Stephen Klett to Douglas Klever
- Duane Klever to Francis Klick
- Frank Klick to Jeffrey Klier
- Jennifer Klier to Robert Kligman
- Barbara Klika to Frank Klimala
- Andrew Kliman to Deborah Klimek
- Debra Klimek to David Kliment
- Jennifer Kliment to Abby Kline
- Abigail Kline to Clare Kline
- Clarence Kline to Grant Kline
- Greg Kline to Kip Kline
- Kirk Kline to Nate Kline
- Nathan Kline to Tammy Kline
- Tanya Kline to Gloria Klinefelter
- Helen Klinefelter to Edwin Kling
- Eileen Kling to Rita Kling
- Robert Kling to Todd Klingbeil
- Tracy Klingbeil to Hans Klingenberg
- Harry Klingenberg to Mildred Klingensmith
- Nancy Klingensmith to Elsie Klinger
- Emil Klinger to Mildred Klinger
- Mona Klinger to Betty Klingler
- Beverly Klingler to Robert Klinglesmith
- William Klinglesmith to Jan Klink
- Jane Klink to Joseph Klinker
- Karen Klinker to Joseph Klinzing
- Kelly Klinzing to James Klish
- Jennifer Klish to George Kloc
- Helen Kloc to Lynn Klock
- Margaret Klock to Mary Klodzinski
- Michael Klodzinski to James Kloiber
- Jennifer Kloiber to Stephanie Kloos
- Steven Kloos to Ronald Klopfenstein
- Roy Klopfenstein to Randall Klopp
- Randy Klopp to Angela Klose
- Ann Klose to Mary Klosowski
- Matthew Klosowski to Stephanie Kloss
- Stephen Kloss to Elaine Klosterman
- Elizabeth Klosterman to Allison Klotz
- Alma Klotz to Kevin Klotz
- Kim Klotz to Raymond Klouda
- Richard Klouda to Theresa Kluck
- Thomas Kluck to Linda Kluever
- Mary Kluever to Jonathan Klug
- Jordan Klug to Betty Kluge
- Beverly Kluge to Louis Klugman
- Mark Klugman to Ryan Klump
- Sandra Klump to John Klunk
- Joseph Klunk to Michael Kluth
- Michele Kluth to Jason Kluver
- Jennifer Kluver to Eric Kmetz
- Evelyn Kmetz to Patricia Kmiecik
- Paul Kmiecik to Louis Knab
- Marie Knab to Elizabeth Knack
- Fred Knack to Jane Knap
- John Knap to Agnes Knapp
- Aileen Knapp to Colin Knapp
- Colleen Knapp to Graham Knapp
- Grant Knapp to Kurtis Knapp
- Kyla Knapp to Noah Knapp
- Noelle Knapp to Tori Knapp
- Tracey Knapp to Kenneth Knapton
- Kimberly Knapton to James Knaub
- Janet Knaub to Nicole Knauer
- Pamela Knauer to Scott Knauff
- Sean Knauff to Benjamin Knauss
- Betty Knauss to John Kneafsey
- Kathleen Kneafsey to Cody Knecht
- Colleen Knecht to Phyllis Knecht
- Rachel Knecht to Rebecca Knee
- Richard Knee to Lisa Kneeland
- Lois Kneeland to Paul Kneip
- Rebecca Kneip to Gloria Kneller
- Heidi Kneller to Leenora Knepp
- Leonard Knepp to Heather Knepper
- Heidi Knepper to Frank Knerr
- Fred Knerr to Thomas Knez
- Henry Knezek to Thomas Knicely
- Timothy Knicely to Lee Knickerbocker
- Leo Knickerbocker to Daniel Knierim
- David Knierim to Paul Kniffen
- Randy Kniffen to Allene Knight
- Allie Knight to Brice Knight
- Bridget Knight to Clifford Knight
- Clifton Knight to Dominick Knight
- Dominique Knight to Freddie Knight
- Frederic Knight to Jacqueline Knight
- Jacquelyn Knight to Kassandra Knight
- Kassie Knight to Lela Knight
- Leland Knight to Martin Knight
- Martina Knight to Oma Knight
- Omar Knight to Ross Knight
- Roswitha Knight to Tabatha Knight
- Tabitha Knight to Wesley Knight
- Weston Knight to Julie Knighten
- Justin Knighten to Bobbie Knighton
- Bobby Knighton to Mildred Knighton
- Milton Knighton to Philip Knights
- Phyllis Knights to Kyle Knipfer
- Linda Knipfer to Susan Knipp
- Tammy Knipp to William Knipscher
- John Knipschild to Craig Knisley
- Cynthia Knisley to Amy Kniss
- Barbara Kniss to Edward Knittle
- Elizabeth Knittle to Craig Knoblauch
- Cynthia Knoblauch to Howard Knobloch
- Jack Knobloch to Dennis Knoch
- Donald Knoch to Barbara Knode
- Betty Knode to Eric Knoedler
- George Knoedler to Harry Knoles
- Jack Knoles to Gayle Knoll
- Gene Knoll to Peggy Knoll
- Penny Knoll to Karen Knoop
- Karla Knoop to Robert Knope
- Roger Knope to Robert Knoph
- Todd Knoph to Keith Knopp
- Kelly Knopp to Cathy Knorr
- Chad Knorr to Ruth Knorr
- Ryan Knorr to Andrea Knott
- Andrew Knott to Francis Knott
- Frank Knott to Mallory Knott
- Marc Knott to Victor Knott
- Victoria Knott to Irene Knotts
- Jack Knotts to Stephanie Knotts
- Stephen Knotts to Susan Knouse
- Tammy Knouse to Carol Knowles
- Carole Knowles to Fred Knowles
- Freddie Knowles to Kelli Knowles
- Kellie Knowles to Nathaniel Knowles
- Nedra Knowles to Tiffany Knowles
- Tim Knowles to Debbie Knowlton
- Deborah Knowlton to Matthew Knowlton
- Maureen Knowlton to Andrea Knox
- Andrew Knox to Corey Knox
- Corinne Knox to Frank Knox
- Frankie Knox to Juana Knox
- Juanita Knox to Margarete Knox
- Margie Knox to Rick Knox
- Rickey Knox to Toya Knox
- Tracey Knox to Jonathan Knuckles
- Joseph Knuckles to Danielle Knudsen
- Darlene Knudsen to Lloyd Knudsen
- Lois Knudsen to Anna Knudson
- Anne Knudson to Karla Knudson
- Karol Knudson to Valerie Knudson
- Vera Knudson to James Knuffke
- John Knuffke to Andrea Knuth
- Andrew Knuth to Raymond Knuth
- Rebecca Knuth to Todd Knutsen
- Vicki Knutsen to Doug Knutson
- Douglas Knutson to Knut Knutson
- Knute Knutson to Ronnie Knutson
- Rory Knutson to Andy Ko
- Angela Ko to Ja Ko
- Jack Ko to Ronald Ko
- Rosa Ko to Stephen Koback
- Susan Koback to Kaoru Kobayashi
- Karen Kobayashi to Tom Kobayashi
- Tomoko Kobayashi to Andrew Kober
- Ann Kober to Edward Kobeski
- James Kobeski to Joshua Kobrin
- Lawrence Kobrin to Robert Koby
- Ronald Koby to Richard Kocan
- Robert Kocan to Carson Koch
- Carter Koch to Ernst Koch
- Ervin Koch to Jim Koch
- Jimmy Koch to Luke Koch
- Lydia Koch to Renate Koch
- Rene Koch to Weser Koch
- Wesley Koch to Lori Kochanski
- Marie Kochanski to Dennis Kocher
- Diana Kocher to Renee Kocher
- Richard Kocher to Anna Kochis
- Anne Kochis to Evelyn Kocian
- Frank Kocian to Judith Kock
- Karen Kock to Jozsef Kocsis
- Judith Kocsis to Eastman Kodak
- James Kodak to Laura Koebel
- Linda Koebel to Chad Koehl
- Charles Koehl to Charlotte Koehler
- Chase Koehler to Jacob Koehler
- Jacqueline Koehler to Molly Koehler
- Mona Koehler to Gary Koehmstedt
- Joan Koehmstedt to Hannah Koehn
- Hans Koehn to Regina Koehn
- Renee Koehn to James Koeing
- John Koeing to Andrea Koelling
- Ann Koelling to Bobbie Koen
- Brenda Koen to Vernon Koenen
- Walter Koenen to Doris Koenig
- Dorothy Koenig to Karin Koenig
- Karl Koenig to Rene Koenig
- Renee Koenig to Laura Koenigsberg
- Leo Koenigsberg to Glenn Koepke
- Gloria Koepke to Jessica Koepp
- John Koepp to Dorothy Koeppen
- Douglas Koeppen to Lisa Koerber
- Lynn Koerber to Janet Koerner
- Janice Koerner to Mary Koerper
- Richard Koerper to Gertrude Koester
- Gina Koester to Sandra Koester
- Sandy Koester to Rita Koett
- Darren Koettel to Kelly Koffler
- Kenneth Koffler to Joseph Kofsky
- Leonard Kofsky to Natalya Kogan