- Kabinoff
- Kagan
- Kaganovich
- Kahng
- Kaido
- Kalled
- Kamya
- Kane
- Kannenberg
- Kaplan
- Kappeller
- Karins
- Karl
- Kartel
- Kasparoglu
- Katz
- Kavanaugh
- Keane
- Kearney
- Kearns
- Kearsing
- Keating
- Keefe
- Keegan
- Keeler
- Keenan
- Kelley
- Kelly
- Kemp
- Kenneally
- Kennedy
- Kenton
- Kerwin
- Keyoskey
- Khajehzadeh
- Khan
- Kibbe
- Kidd
- Kiernozek
- Killough
- Kilmer
- Kinal
- King
- Kircher
- Kirk
- Kirkley
- Kitts
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- Klein
- Kletter
- Klimchak
- Klimkewicz
- Kline
- Klingenberger
- Knauf
- Kniffen
- Knight
- Knoll
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- Kohinke
- Kohn
- Kolach
- Kolak
- Koleci
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- Korba
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- Kosakowski
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- Koslow
- Kotary
- Koutelis
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- Kozilski
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- Krause
- Kreczko
- Krekeler
- Kretser
- Krieg
- Kronenberg
- Krueger
- Krzanicki
- Kudan
- Kumar
- Kunkel
- Kupiak
- Kuritz
- Kutchukian
- Kuzniar
- Kwarta
- Kyratzis