Knatchbull is a surname. The surname Knatchbull has the meaning "knock out the bull", i.e. butcher.Cottle, Basil (1967) The Penguin Dictionary of Surnames. Harmondsworth: Penguin Books; p. 160
Notable people with the surname include:
Adrian Knatchbull-Hugessen Alexandra Knatchbull Daisy Knatchbull Dora Knatchbull, married name of Dora Bright (1862–1951), English composer and pianist Doreen Knatchbull, Baroness Brabourne Edward Knatchbull (disambiguation), various people Edward Knatchbull-Hugessen, 1st Baron Brabourne John Knatchbull, 7th Baron Brabourne Leonora Knatchbull Michael Knatchbull Michael Knatchbull, 5th Baron Brabourne Nicholas Knatchbull Norton Knatchbull (disambiguation), various people Patricia Knatchbull, 2nd Countess Mountbatten of Burma
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