John Blackwood

John Blackwood may refer to:
 * John Blackwood (publisher) (1818–1879), Scottish publisher
 * Sir John Blackwood, 2nd Baronet (1722–1799), Irish politician and baronet
 * Jock Blackwood (1899–c. 1970), Australian rugby union player
 * John Blackwood (merchant) (before 1777–1819), Canadian merchant
 * John Blackwood (footballer, born 1877) (1877–1913), Scottish footballer
 * John Blackwood (footballer, born 1935), Scottish footballer
 * Johnny Blackwood, fictional character in Act of Love
 * John Blackwood (art dealer) (1696–1777), Scottish art dealer
 * John Arthur Blackwood (1904–1973), British Hong Kong businessman
 * John Blackwood, 11th Baron Dufferin and Claneboye (born 1944), Australian architect