Sir John Strathearn Hendrie KCMG CVO (August 15, 1857 – July 17, 1923) was the 11th Lieutenant Governor of Ontario from 1914 to 1919.

He became a railway contractor and promoted the Hamilton Bridge Works.

He was then Member of Provincial Parliament from 1902 to 1914, where he held the positions of Minister without Portfolio and Hydro-Electric Commissioner.

Much of his time in Office was spent contributing to the War Effort and hosting soldiers, seamen and dignitaries.

He is the only Ontario viceroy to live at two Government Houses, including Chorley Park.