K
- Myles Kennedy - Singer/Songwriter/Guitarist
- Madeline Kahn – Actress
- Mindy Kaling – Actress "The Office"
- Alex Karalexis – UFC,WEC Fighter
- Frankie Kazarian – TNA Wrestler (Lived in MA)
- John F. Kennedy – Massachusetts senator and 35th President of the United States
- Robert Kennedy – US Attorney General and New York senator
- Edward Kennedy – US Senator
- Joseph P. Kennedy, Sr. – Father of John F. Kennedy, Robert Kennedy, and Edward Kennedy
- Jack Kerouac – Beat Poet and Writer.
- Nancy Kerrigan – Olympic Figure Skater
- John Kerry – US Senator, US Presidential candidate in 2004
- Killswitch Engage – Metalcore Band
- John King – CNN Head Political Correspondent
- Kofi Kingston – WWE Superstar (Born in Ghana lived in Boston)
- Jordan Knight – Singer, Dancer (See New Kids on the Block)
- Walter "Killer" Kowalski – Professional Wrestler, Teacher, Photographer
- Bob Kraft – Owner of the New England Patriots
- John Krasinski – Actor (Jim Halpert in NBC's "The Office")
- Jonathan Knight – Singer, Dancer (See New Kids on the Block)
- Kenny Wormald – Professional Dancer, MTV's Dancelife
- Kenny Florian – UFC fighter
- George Jung – Infamous Drug Dealer
Read more about this topic: List Of Bostonians