John Knill (17331811), and English lawyer and Collector of Customs at St Ives, Cornwall.

John Knill may also refer to: Frank John Knill (fl. 1918), British Marine, winner of the Conspicuous Gallantry Medal John Knill (MP) (16th century), English member of parliament for Radnorshire Several of the Knill baronets in the county of Kent, England: Sir John Knill, 2nd Baronet (1856–1934), Lord Mayor of London during 1909–1910 Sir John Stuart-Knill, 3rd Baronet (1886–1973) Sir John Kenelm Stuart Knill, 4th Baronet (1913–1998) Sir Thomas John Pugin Bartholomew Knill, 5th Baronet (born 1952)