Following is an incomplete list of past and present Members of Parliament (MPs) of the United Kingdom whose surnames begin with K. The dates in brackets are the periods for which they were MPs.

• Rt. Hon. Gerald Bernard Kaufman (1970-present)
• Sally Curtis Keeble
• Alan Keen (1992-present)
• Ann Lloyd Keen (1997-present)
• Paul Stuart Keetch (1997-present)
• Dame Mary Elaine Kellett-Bowman
• Major Sir Frederic Arthur Kelley (1918-1923)
• Ruth Maria Kelly (1997-present)
• Fraser Kemp (2001-present)
• Rt. Hon. Charles Peter Kennedy (1983-present)
• Jane Elizabeth Kennedy (1992-present)
• Robert Simon Key (1983-present)
• Piara Singh Khabra (1992-present)
• David Neil Kidney (1997-present)
• Sir James Alexander Kilfedder
• Peter Kilfoyle (1991-present)
• Andy King (1997-present)
• Oona Tamsyn King
• Tom King (1970-2001)
• Tess Kingham
• Neil Kinnock (1970-1995)
• Julie Kirkbride (1997-present)
• Timothy John Robert Kirkhope
• Archibald Johnstone Kirkwood (1983-present)
• Roger Maurice Knapman
• Angela Ann Knight
• Rt. Hon. Gregory Knight
• Jim Knight (2001-present)
• Dame Joan Christabel Jill Knight
• Sir David Laidlaw Knox
• Dr Ashok Kumar (1991-1992, 1997-present)
• George Alexander Bernard Kynoch